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Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull general security layer updates from James Morris: - Convert security hooks from list to hlist, a nice cleanup, saving about 50% of space, from Sargun Dhillon. - Only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill (as the secid can be determined from the cred), from Stephen Smalley. - Close a potential race in kernel_read_file(), by making the file unwritable before calling the LSM check (vs after), from Kees Cook. * 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: security: convert security hooks to use hlist exec: Set file unwritable before LSM check usb, signal, security: only pass the cred, not the secid, to kill_pid_info_as_cred and security_task_kill
This commit is contained in:
Linus Torvalds
commit
3612605a5a
@ -65,7 +65,6 @@ struct usb_dev_state {
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const struct cred *cred;
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void __user *disccontext;
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unsigned long ifclaimed;
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u32 secid;
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u32 disabled_bulk_eps;
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bool privileges_dropped;
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unsigned long interface_allowed_mask;
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@ -95,7 +94,6 @@ struct async {
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struct usb_memory *usbm;
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unsigned int mem_usage;
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int status;
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u32 secid;
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u8 bulk_addr;
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u8 bulk_status;
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};
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@ -586,7 +584,6 @@ static void async_completed(struct urb *urb)
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struct usb_dev_state *ps = as->ps;
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struct siginfo sinfo;
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struct pid *pid = NULL;
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u32 secid = 0;
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const struct cred *cred = NULL;
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int signr;
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@ -602,7 +599,6 @@ static void async_completed(struct urb *urb)
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sinfo.si_addr = as->userurb;
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pid = get_pid(as->pid);
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cred = get_cred(as->cred);
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secid = as->secid;
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}
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snoop(&urb->dev->dev, "urb complete\n");
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snoop_urb(urb->dev, as->userurb, urb->pipe, urb->actual_length,
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@ -618,7 +614,7 @@ static void async_completed(struct urb *urb)
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spin_unlock(&ps->lock);
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if (signr) {
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kill_pid_info_as_cred(sinfo.si_signo, &sinfo, pid, cred, secid);
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kill_pid_info_as_cred(sinfo.si_signo, &sinfo, pid, cred);
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put_pid(pid);
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put_cred(cred);
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}
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@ -1013,7 +1009,6 @@ static int usbdev_open(struct inode *inode, struct file *file)
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init_waitqueue_head(&ps->wait);
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ps->disc_pid = get_pid(task_pid(current));
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ps->cred = get_current_cred();
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security_task_getsecid(current, &ps->secid);
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smp_wmb();
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list_add_tail(&ps->list, &dev->filelist);
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file->private_data = ps;
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@ -1727,7 +1722,6 @@ static int proc_do_submiturb(struct usb_dev_state *ps, struct usbdevfs_urb *uurb
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as->ifnum = ifnum;
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as->pid = get_pid(task_pid(current));
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as->cred = get_current_cred();
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security_task_getsecid(current, &as->secid);
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snoop_urb(ps->dev, as->userurb, as->urb->pipe,
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as->urb->transfer_buffer_length, 0, SUBMIT,
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NULL, 0);
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@ -2617,7 +2611,7 @@ static void usbdev_remove(struct usb_device *udev)
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sinfo.si_code = SI_ASYNCIO;
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sinfo.si_addr = ps->disccontext;
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kill_pid_info_as_cred(ps->discsignr, &sinfo,
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ps->disc_pid, ps->cred, ps->secid);
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ps->disc_pid, ps->cred);
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}
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}
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}
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@ -895,14 +895,14 @@ int kernel_read_file(struct file *file, void **buf, loff_t *size,
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if (!S_ISREG(file_inode(file)->i_mode) || max_size < 0)
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return -EINVAL;
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ret = security_kernel_read_file(file, id);
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if (ret)
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return ret;
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ret = deny_write_access(file);
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if (ret)
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return ret;
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ret = security_kernel_read_file(file, id);
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if (ret)
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goto out;
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i_size = i_size_read(file_inode(file));
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if (max_size > 0 && i_size > max_size) {
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ret = -EFBIG;
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@ -672,7 +672,8 @@
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* @p contains the task_struct for process.
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* @info contains the signal information.
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* @sig contains the signal value.
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* @secid contains the sid of the process where the signal originated
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* @cred contains the cred of the process where the signal originated, or
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* NULL if the current task is the originator.
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* Return 0 if permission is granted.
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* @task_prctl:
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* Check permission before performing a process control operation on the
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@ -1591,7 +1592,7 @@ union security_list_options {
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int (*task_getscheduler)(struct task_struct *p);
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int (*task_movememory)(struct task_struct *p);
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int (*task_kill)(struct task_struct *p, struct siginfo *info,
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int sig, u32 secid);
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int sig, const struct cred *cred);
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int (*task_prctl)(int option, unsigned long arg2, unsigned long arg3,
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unsigned long arg4, unsigned long arg5);
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void (*task_to_inode)(struct task_struct *p, struct inode *inode);
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@ -1763,233 +1764,233 @@ union security_list_options {
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};
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struct security_hook_heads {
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struct list_head binder_set_context_mgr;
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struct list_head binder_transaction;
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struct list_head binder_transfer_binder;
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struct list_head binder_transfer_file;
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struct list_head ptrace_access_check;
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struct list_head ptrace_traceme;
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struct list_head capget;
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struct list_head capset;
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struct list_head capable;
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struct list_head quotactl;
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struct list_head quota_on;
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struct list_head syslog;
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struct list_head settime;
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struct list_head vm_enough_memory;
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struct list_head bprm_set_creds;
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struct list_head bprm_check_security;
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struct list_head bprm_committing_creds;
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struct list_head bprm_committed_creds;
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struct list_head sb_alloc_security;
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struct list_head sb_free_security;
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struct list_head sb_copy_data;
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struct list_head sb_remount;
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struct list_head sb_kern_mount;
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struct list_head sb_show_options;
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struct list_head sb_statfs;
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struct list_head sb_mount;
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struct list_head sb_umount;
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struct list_head sb_pivotroot;
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struct list_head sb_set_mnt_opts;
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struct list_head sb_clone_mnt_opts;
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struct list_head sb_parse_opts_str;
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struct list_head dentry_init_security;
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struct list_head dentry_create_files_as;
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struct hlist_head binder_set_context_mgr;
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struct hlist_head binder_transaction;
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struct hlist_head binder_transfer_binder;
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struct hlist_head binder_transfer_file;
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struct hlist_head ptrace_access_check;
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struct hlist_head ptrace_traceme;
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struct hlist_head capget;
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struct hlist_head capset;
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struct hlist_head capable;
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struct hlist_head quotactl;
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struct hlist_head quota_on;
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struct hlist_head syslog;
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struct hlist_head settime;
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struct hlist_head vm_enough_memory;
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struct hlist_head bprm_set_creds;
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struct hlist_head bprm_check_security;
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struct hlist_head bprm_committing_creds;
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struct hlist_head bprm_committed_creds;
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struct hlist_head sb_alloc_security;
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struct hlist_head sb_free_security;
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struct hlist_head sb_copy_data;
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struct hlist_head sb_remount;
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struct hlist_head sb_kern_mount;
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struct hlist_head sb_show_options;
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struct hlist_head sb_statfs;
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struct hlist_head sb_mount;
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struct hlist_head sb_umount;
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struct hlist_head sb_pivotroot;
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struct hlist_head sb_set_mnt_opts;
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struct hlist_head sb_clone_mnt_opts;
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struct hlist_head sb_parse_opts_str;
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struct hlist_head dentry_init_security;
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struct hlist_head dentry_create_files_as;
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#ifdef CONFIG_SECURITY_PATH
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struct list_head path_unlink;
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struct list_head path_mkdir;
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struct list_head path_rmdir;
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struct list_head path_mknod;
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struct list_head path_truncate;
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struct list_head path_symlink;
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struct list_head path_link;
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struct list_head path_rename;
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struct list_head path_chmod;
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struct list_head path_chown;
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struct list_head path_chroot;
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struct hlist_head path_unlink;
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struct hlist_head path_mkdir;
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struct hlist_head path_rmdir;
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struct hlist_head path_mknod;
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struct hlist_head path_truncate;
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struct hlist_head path_symlink;
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struct hlist_head path_link;
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struct hlist_head path_rename;
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struct hlist_head path_chmod;
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struct hlist_head path_chown;
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struct hlist_head path_chroot;
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#endif
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struct list_head inode_alloc_security;
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struct list_head inode_free_security;
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struct list_head inode_init_security;
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struct list_head inode_create;
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struct list_head inode_link;
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struct list_head inode_unlink;
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struct list_head inode_symlink;
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struct list_head inode_mkdir;
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struct list_head inode_rmdir;
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struct list_head inode_mknod;
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struct list_head inode_rename;
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struct list_head inode_readlink;
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struct list_head inode_follow_link;
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struct list_head inode_permission;
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struct list_head inode_setattr;
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struct list_head inode_getattr;
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struct list_head inode_setxattr;
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struct list_head inode_post_setxattr;
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struct list_head inode_getxattr;
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struct list_head inode_listxattr;
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struct list_head inode_removexattr;
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struct list_head inode_need_killpriv;
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struct list_head inode_killpriv;
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struct list_head inode_getsecurity;
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struct list_head inode_setsecurity;
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struct list_head inode_listsecurity;
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struct list_head inode_getsecid;
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struct list_head inode_copy_up;
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struct list_head inode_copy_up_xattr;
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struct list_head file_permission;
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struct list_head file_alloc_security;
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struct list_head file_free_security;
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struct list_head file_ioctl;
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struct list_head mmap_addr;
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struct list_head mmap_file;
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struct list_head file_mprotect;
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struct list_head file_lock;
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struct list_head file_fcntl;
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struct list_head file_set_fowner;
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struct list_head file_send_sigiotask;
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struct list_head file_receive;
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struct list_head file_open;
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struct list_head task_alloc;
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struct list_head task_free;
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struct list_head cred_alloc_blank;
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struct list_head cred_free;
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struct list_head cred_prepare;
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struct list_head cred_transfer;
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struct list_head kernel_act_as;
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struct list_head kernel_create_files_as;
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struct list_head kernel_read_file;
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struct list_head kernel_post_read_file;
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struct list_head kernel_module_request;
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struct list_head task_fix_setuid;
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struct list_head task_setpgid;
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struct list_head task_getpgid;
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struct list_head task_getsid;
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struct list_head task_getsecid;
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struct list_head task_setnice;
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struct list_head task_setioprio;
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struct list_head task_getioprio;
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struct list_head task_prlimit;
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struct list_head task_setrlimit;
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struct list_head task_setscheduler;
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struct list_head task_getscheduler;
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struct list_head task_movememory;
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struct list_head task_kill;
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struct list_head task_prctl;
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struct list_head task_to_inode;
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struct list_head ipc_permission;
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struct list_head ipc_getsecid;
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struct list_head msg_msg_alloc_security;
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struct list_head msg_msg_free_security;
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struct list_head msg_queue_alloc_security;
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struct list_head msg_queue_free_security;
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struct list_head msg_queue_associate;
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struct list_head msg_queue_msgctl;
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struct list_head msg_queue_msgsnd;
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struct list_head msg_queue_msgrcv;
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struct list_head shm_alloc_security;
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struct list_head shm_free_security;
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struct list_head shm_associate;
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struct list_head shm_shmctl;
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struct list_head shm_shmat;
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struct list_head sem_alloc_security;
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struct list_head sem_free_security;
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struct list_head sem_associate;
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struct list_head sem_semctl;
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struct list_head sem_semop;
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struct list_head netlink_send;
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struct list_head d_instantiate;
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struct list_head getprocattr;
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struct list_head setprocattr;
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struct list_head ismaclabel;
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struct list_head secid_to_secctx;
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struct list_head secctx_to_secid;
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struct list_head release_secctx;
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struct list_head inode_invalidate_secctx;
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struct list_head inode_notifysecctx;
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struct list_head inode_setsecctx;
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struct list_head inode_getsecctx;
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||||
struct hlist_head inode_alloc_security;
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||||
struct hlist_head inode_free_security;
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||||
struct hlist_head inode_init_security;
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struct hlist_head inode_create;
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||||
struct hlist_head inode_link;
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||||
struct hlist_head inode_unlink;
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||||
struct hlist_head inode_symlink;
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||||
struct hlist_head inode_mkdir;
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||||
struct hlist_head inode_rmdir;
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||||
struct hlist_head inode_mknod;
|
||||
struct hlist_head inode_rename;
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||||
struct hlist_head inode_readlink;
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||||
struct hlist_head inode_follow_link;
|
||||
struct hlist_head inode_permission;
|
||||
struct hlist_head inode_setattr;
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||||
struct hlist_head inode_getattr;
|
||||
struct hlist_head inode_setxattr;
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||||
struct hlist_head inode_post_setxattr;
|
||||
struct hlist_head inode_getxattr;
|
||||
struct hlist_head inode_listxattr;
|
||||
struct hlist_head inode_removexattr;
|
||||
struct hlist_head inode_need_killpriv;
|
||||
struct hlist_head inode_killpriv;
|
||||
struct hlist_head inode_getsecurity;
|
||||
struct hlist_head inode_setsecurity;
|
||||
struct hlist_head inode_listsecurity;
|
||||
struct hlist_head inode_getsecid;
|
||||
struct hlist_head inode_copy_up;
|
||||
struct hlist_head inode_copy_up_xattr;
|
||||
struct hlist_head file_permission;
|
||||
struct hlist_head file_alloc_security;
|
||||
struct hlist_head file_free_security;
|
||||
struct hlist_head file_ioctl;
|
||||
struct hlist_head mmap_addr;
|
||||
struct hlist_head mmap_file;
|
||||
struct hlist_head file_mprotect;
|
||||
struct hlist_head file_lock;
|
||||
struct hlist_head file_fcntl;
|
||||
struct hlist_head file_set_fowner;
|
||||
struct hlist_head file_send_sigiotask;
|
||||
struct hlist_head file_receive;
|
||||
struct hlist_head file_open;
|
||||
struct hlist_head task_alloc;
|
||||
struct hlist_head task_free;
|
||||
struct hlist_head cred_alloc_blank;
|
||||
struct hlist_head cred_free;
|
||||
struct hlist_head cred_prepare;
|
||||
struct hlist_head cred_transfer;
|
||||
struct hlist_head kernel_act_as;
|
||||
struct hlist_head kernel_create_files_as;
|
||||
struct hlist_head kernel_read_file;
|
||||
struct hlist_head kernel_post_read_file;
|
||||
struct hlist_head kernel_module_request;
|
||||
struct hlist_head task_fix_setuid;
|
||||
struct hlist_head task_setpgid;
|
||||
struct hlist_head task_getpgid;
|
||||
struct hlist_head task_getsid;
|
||||
struct hlist_head task_getsecid;
|
||||
struct hlist_head task_setnice;
|
||||
struct hlist_head task_setioprio;
|
||||
struct hlist_head task_getioprio;
|
||||
struct hlist_head task_prlimit;
|
||||
struct hlist_head task_setrlimit;
|
||||
struct hlist_head task_setscheduler;
|
||||
struct hlist_head task_getscheduler;
|
||||
struct hlist_head task_movememory;
|
||||
struct hlist_head task_kill;
|
||||
struct hlist_head task_prctl;
|
||||
struct hlist_head task_to_inode;
|
||||
struct hlist_head ipc_permission;
|
||||
struct hlist_head ipc_getsecid;
|
||||
struct hlist_head msg_msg_alloc_security;
|
||||
struct hlist_head msg_msg_free_security;
|
||||
struct hlist_head msg_queue_alloc_security;
|
||||
struct hlist_head msg_queue_free_security;
|
||||
struct hlist_head msg_queue_associate;
|
||||
struct hlist_head msg_queue_msgctl;
|
||||
struct hlist_head msg_queue_msgsnd;
|
||||
struct hlist_head msg_queue_msgrcv;
|
||||
struct hlist_head shm_alloc_security;
|
||||
struct hlist_head shm_free_security;
|
||||
struct hlist_head shm_associate;
|
||||
struct hlist_head shm_shmctl;
|
||||
struct hlist_head shm_shmat;
|
||||
struct hlist_head sem_alloc_security;
|
||||
struct hlist_head sem_free_security;
|
||||
struct hlist_head sem_associate;
|
||||
struct hlist_head sem_semctl;
|
||||
struct hlist_head sem_semop;
|
||||
struct hlist_head netlink_send;
|
||||
struct hlist_head d_instantiate;
|
||||
struct hlist_head getprocattr;
|
||||
struct hlist_head setprocattr;
|
||||
struct hlist_head ismaclabel;
|
||||
struct hlist_head secid_to_secctx;
|
||||
struct hlist_head secctx_to_secid;
|
||||
struct hlist_head release_secctx;
|
||||
struct hlist_head inode_invalidate_secctx;
|
||||
struct hlist_head inode_notifysecctx;
|
||||
struct hlist_head inode_setsecctx;
|
||||
struct hlist_head inode_getsecctx;
|
||||
#ifdef CONFIG_SECURITY_NETWORK
|
||||
struct list_head unix_stream_connect;
|
||||
struct list_head unix_may_send;
|
||||
struct list_head socket_create;
|
||||
struct list_head socket_post_create;
|
||||
struct list_head socket_bind;
|
||||
struct list_head socket_connect;
|
||||
struct list_head socket_listen;
|
||||
struct list_head socket_accept;
|
||||
struct list_head socket_sendmsg;
|
||||
struct list_head socket_recvmsg;
|
||||
struct list_head socket_getsockname;
|
||||
struct list_head socket_getpeername;
|
||||
struct list_head socket_getsockopt;
|
||||
struct list_head socket_setsockopt;
|
||||
struct list_head socket_shutdown;
|
||||
struct list_head socket_sock_rcv_skb;
|
||||
struct list_head socket_getpeersec_stream;
|
||||
struct list_head socket_getpeersec_dgram;
|
||||
struct list_head sk_alloc_security;
|
||||
struct list_head sk_free_security;
|
||||
struct list_head sk_clone_security;
|
||||
struct list_head sk_getsecid;
|
||||
struct list_head sock_graft;
|
||||
struct list_head inet_conn_request;
|
||||
struct list_head inet_csk_clone;
|
||||
struct list_head inet_conn_established;
|
||||
struct list_head secmark_relabel_packet;
|
||||
struct list_head secmark_refcount_inc;
|
||||
struct list_head secmark_refcount_dec;
|
||||
struct list_head req_classify_flow;
|
||||
struct list_head tun_dev_alloc_security;
|
||||
struct list_head tun_dev_free_security;
|
||||
struct list_head tun_dev_create;
|
||||
struct list_head tun_dev_attach_queue;
|
||||
struct list_head tun_dev_attach;
|
||||
struct list_head tun_dev_open;
|
||||
struct list_head sctp_assoc_request;
|
||||
struct list_head sctp_bind_connect;
|
||||
struct list_head sctp_sk_clone;
|
||||
struct hlist_head unix_stream_connect;
|
||||
struct hlist_head unix_may_send;
|
||||
struct hlist_head socket_create;
|
||||
struct hlist_head socket_post_create;
|
||||
struct hlist_head socket_bind;
|
||||
struct hlist_head socket_connect;
|
||||
struct hlist_head socket_listen;
|
||||
struct hlist_head socket_accept;
|
||||
struct hlist_head socket_sendmsg;
|
||||
struct hlist_head socket_recvmsg;
|
||||
struct hlist_head socket_getsockname;
|
||||
struct hlist_head socket_getpeername;
|
||||
struct hlist_head socket_getsockopt;
|
||||
struct hlist_head socket_setsockopt;
|
||||
struct hlist_head socket_shutdown;
|
||||
struct hlist_head socket_sock_rcv_skb;
|
||||
struct hlist_head socket_getpeersec_stream;
|
||||
struct hlist_head socket_getpeersec_dgram;
|
||||
struct hlist_head sk_alloc_security;
|
||||
struct hlist_head sk_free_security;
|
||||
struct hlist_head sk_clone_security;
|
||||
struct hlist_head sk_getsecid;
|
||||
struct hlist_head sock_graft;
|
||||
struct hlist_head inet_conn_request;
|
||||
struct hlist_head inet_csk_clone;
|
||||
struct hlist_head inet_conn_established;
|
||||
struct hlist_head secmark_relabel_packet;
|
||||
struct hlist_head secmark_refcount_inc;
|
||||
struct hlist_head secmark_refcount_dec;
|
||||
struct hlist_head req_classify_flow;
|
||||
struct hlist_head tun_dev_alloc_security;
|
||||
struct hlist_head tun_dev_free_security;
|
||||
struct hlist_head tun_dev_create;
|
||||
struct hlist_head tun_dev_attach_queue;
|
||||
struct hlist_head tun_dev_attach;
|
||||
struct hlist_head tun_dev_open;
|
||||
struct hlist_head sctp_assoc_request;
|
||||
struct hlist_head sctp_bind_connect;
|
||||
struct hlist_head sctp_sk_clone;
|
||||
#endif /* CONFIG_SECURITY_NETWORK */
|
||||
#ifdef CONFIG_SECURITY_INFINIBAND
|
||||
struct list_head ib_pkey_access;
|
||||
struct list_head ib_endport_manage_subnet;
|
||||
struct list_head ib_alloc_security;
|
||||
struct list_head ib_free_security;
|
||||
struct hlist_head ib_pkey_access;
|
||||
struct hlist_head ib_endport_manage_subnet;
|
||||
struct hlist_head ib_alloc_security;
|
||||
struct hlist_head ib_free_security;
|
||||
#endif /* CONFIG_SECURITY_INFINIBAND */
|
||||
#ifdef CONFIG_SECURITY_NETWORK_XFRM
|
||||
struct list_head xfrm_policy_alloc_security;
|
||||
struct list_head xfrm_policy_clone_security;
|
||||
struct list_head xfrm_policy_free_security;
|
||||
struct list_head xfrm_policy_delete_security;
|
||||
struct list_head xfrm_state_alloc;
|
||||
struct list_head xfrm_state_alloc_acquire;
|
||||
struct list_head xfrm_state_free_security;
|
||||
struct list_head xfrm_state_delete_security;
|
||||
struct list_head xfrm_policy_lookup;
|
||||
struct list_head xfrm_state_pol_flow_match;
|
||||
struct list_head xfrm_decode_session;
|
||||
struct hlist_head xfrm_policy_alloc_security;
|
||||
struct hlist_head xfrm_policy_clone_security;
|
||||
struct hlist_head xfrm_policy_free_security;
|
||||
struct hlist_head xfrm_policy_delete_security;
|
||||
struct hlist_head xfrm_state_alloc;
|
||||
struct hlist_head xfrm_state_alloc_acquire;
|
||||
struct hlist_head xfrm_state_free_security;
|
||||
struct hlist_head xfrm_state_delete_security;
|
||||
struct hlist_head xfrm_policy_lookup;
|
||||
struct hlist_head xfrm_state_pol_flow_match;
|
||||
struct hlist_head xfrm_decode_session;
|
||||
#endif /* CONFIG_SECURITY_NETWORK_XFRM */
|
||||
#ifdef CONFIG_KEYS
|
||||
struct list_head key_alloc;
|
||||
struct list_head key_free;
|
||||
struct list_head key_permission;
|
||||
struct list_head key_getsecurity;
|
||||
struct hlist_head key_alloc;
|
||||
struct hlist_head key_free;
|
||||
struct hlist_head key_permission;
|
||||
struct hlist_head key_getsecurity;
|
||||
#endif /* CONFIG_KEYS */
|
||||
#ifdef CONFIG_AUDIT
|
||||
struct list_head audit_rule_init;
|
||||
struct list_head audit_rule_known;
|
||||
struct list_head audit_rule_match;
|
||||
struct list_head audit_rule_free;
|
||||
struct hlist_head audit_rule_init;
|
||||
struct hlist_head audit_rule_known;
|
||||
struct hlist_head audit_rule_match;
|
||||
struct hlist_head audit_rule_free;
|
||||
#endif /* CONFIG_AUDIT */
|
||||
#ifdef CONFIG_BPF_SYSCALL
|
||||
struct list_head bpf;
|
||||
struct list_head bpf_map;
|
||||
struct list_head bpf_prog;
|
||||
struct list_head bpf_map_alloc_security;
|
||||
struct list_head bpf_map_free_security;
|
||||
struct list_head bpf_prog_alloc_security;
|
||||
struct list_head bpf_prog_free_security;
|
||||
struct hlist_head bpf;
|
||||
struct hlist_head bpf_map;
|
||||
struct hlist_head bpf_prog;
|
||||
struct hlist_head bpf_map_alloc_security;
|
||||
struct hlist_head bpf_map_free_security;
|
||||
struct hlist_head bpf_prog_alloc_security;
|
||||
struct hlist_head bpf_prog_free_security;
|
||||
#endif /* CONFIG_BPF_SYSCALL */
|
||||
} __randomize_layout;
|
||||
|
||||
@ -1998,8 +1999,8 @@ struct security_hook_heads {
|
||||
* For use with generic list macros for common operations.
|
||||
*/
|
||||
struct security_hook_list {
|
||||
struct list_head list;
|
||||
struct list_head *head;
|
||||
struct hlist_node list;
|
||||
struct hlist_head *head;
|
||||
union security_list_options hook;
|
||||
char *lsm;
|
||||
} __randomize_layout;
|
||||
@ -2038,7 +2039,7 @@ static inline void security_delete_hooks(struct security_hook_list *hooks,
|
||||
int i;
|
||||
|
||||
for (i = 0; i < count; i++)
|
||||
list_del_rcu(&hooks[i].list);
|
||||
hlist_del_rcu(&hooks[i].list);
|
||||
}
|
||||
#endif /* CONFIG_SECURITY_SELINUX_DISABLE */
|
||||
|
||||
|
||||
@ -319,7 +319,7 @@ extern int force_sig_info(int, struct siginfo *, struct task_struct *);
|
||||
extern int __kill_pgrp_info(int sig, struct siginfo *info, struct pid *pgrp);
|
||||
extern int kill_pid_info(int sig, struct siginfo *info, struct pid *pid);
|
||||
extern int kill_pid_info_as_cred(int, struct siginfo *, struct pid *,
|
||||
const struct cred *, u32);
|
||||
const struct cred *);
|
||||
extern int kill_pgrp(struct pid *pid, int sig, int priv);
|
||||
extern int kill_pid(struct pid *pid, int sig, int priv);
|
||||
extern __must_check bool do_notify_parent(struct task_struct *, int);
|
||||
|
||||
@ -345,7 +345,7 @@ int security_task_setscheduler(struct task_struct *p);
|
||||
int security_task_getscheduler(struct task_struct *p);
|
||||
int security_task_movememory(struct task_struct *p);
|
||||
int security_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
int sig, u32 secid);
|
||||
int sig, const struct cred *cred);
|
||||
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
unsigned long arg4, unsigned long arg5);
|
||||
void security_task_to_inode(struct task_struct *p, struct inode *inode);
|
||||
@ -1008,7 +1008,7 @@ static inline int security_task_movememory(struct task_struct *p)
|
||||
|
||||
static inline int security_task_kill(struct task_struct *p,
|
||||
struct siginfo *info, int sig,
|
||||
u32 secid)
|
||||
const struct cred *cred)
|
||||
{
|
||||
return 0;
|
||||
}
|
||||
|
||||
@ -770,7 +770,7 @@ static int check_kill_permission(int sig, struct siginfo *info,
|
||||
}
|
||||
}
|
||||
|
||||
return security_task_kill(t, info, sig, 0);
|
||||
return security_task_kill(t, info, sig, NULL);
|
||||
}
|
||||
|
||||
/**
|
||||
@ -1361,7 +1361,7 @@ static int kill_as_cred_perm(const struct cred *cred,
|
||||
|
||||
/* like kill_pid_info(), but doesn't use uid/euid of "current" */
|
||||
int kill_pid_info_as_cred(int sig, struct siginfo *info, struct pid *pid,
|
||||
const struct cred *cred, u32 secid)
|
||||
const struct cred *cred)
|
||||
{
|
||||
int ret = -EINVAL;
|
||||
struct task_struct *p;
|
||||
@ -1380,7 +1380,7 @@ int kill_pid_info_as_cred(int sig, struct siginfo *info, struct pid *pid,
|
||||
ret = -EPERM;
|
||||
goto out_unlock;
|
||||
}
|
||||
ret = security_task_kill(p, info, sig, secid);
|
||||
ret = security_task_kill(p, info, sig, cred);
|
||||
if (ret)
|
||||
goto out_unlock;
|
||||
|
||||
|
||||
@ -52,8 +52,8 @@ static const struct whitelist_entry whitelist[] = {
|
||||
{ "net/unix/af_unix.c", "unix_skb_parms", "char" },
|
||||
/* big_key payload.data struct splashing */
|
||||
{ "security/keys/big_key.c", "path", "void *" },
|
||||
/* walk struct security_hook_heads as an array of struct list_head */
|
||||
{ "security/security.c", "list_head", "security_hook_heads" },
|
||||
/* walk struct security_hook_heads as an array of struct hlist_head */
|
||||
{ "security/security.c", "hlist_head", "security_hook_heads" },
|
||||
{ }
|
||||
};
|
||||
|
||||
|
||||
@ -716,16 +716,23 @@ static int apparmor_task_setrlimit(struct task_struct *task,
|
||||
}
|
||||
|
||||
static int apparmor_task_kill(struct task_struct *target, struct siginfo *info,
|
||||
int sig, u32 secid)
|
||||
int sig, const struct cred *cred)
|
||||
{
|
||||
struct aa_label *cl, *tl;
|
||||
int error;
|
||||
|
||||
if (secid)
|
||||
/* TODO: after secid to label mapping is done.
|
||||
* Dealing with USB IO specific behavior
|
||||
if (cred) {
|
||||
/*
|
||||
* Dealing with USB IO specific behavior
|
||||
*/
|
||||
return 0;
|
||||
cl = aa_get_newest_cred_label(cred);
|
||||
tl = aa_get_task_label(target);
|
||||
error = aa_may_signal(cl, tl, sig);
|
||||
aa_put_label(cl);
|
||||
aa_put_label(tl);
|
||||
return error;
|
||||
}
|
||||
|
||||
cl = __begin_current_label_crit_section();
|
||||
tl = aa_get_task_label(target);
|
||||
error = aa_may_signal(cl, tl, sig);
|
||||
|
||||
@ -61,11 +61,11 @@ static void __init do_security_initcalls(void)
|
||||
int __init security_init(void)
|
||||
{
|
||||
int i;
|
||||
struct list_head *list = (struct list_head *) &security_hook_heads;
|
||||
struct hlist_head *list = (struct hlist_head *) &security_hook_heads;
|
||||
|
||||
for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct list_head);
|
||||
for (i = 0; i < sizeof(security_hook_heads) / sizeof(struct hlist_head);
|
||||
i++)
|
||||
INIT_LIST_HEAD(&list[i]);
|
||||
INIT_HLIST_HEAD(&list[i]);
|
||||
pr_info("Security Framework initialized\n");
|
||||
|
||||
/*
|
||||
@ -163,7 +163,7 @@ void __init security_add_hooks(struct security_hook_list *hooks, int count,
|
||||
|
||||
for (i = 0; i < count; i++) {
|
||||
hooks[i].lsm = lsm;
|
||||
list_add_tail_rcu(&hooks[i].list, hooks[i].head);
|
||||
hlist_add_tail_rcu(&hooks[i].list, hooks[i].head);
|
||||
}
|
||||
if (lsm_append(lsm, &lsm_names) < 0)
|
||||
panic("%s - Cannot get early memory.\n", __func__);
|
||||
@ -201,7 +201,7 @@ EXPORT_SYMBOL(unregister_lsm_notifier);
|
||||
do { \
|
||||
struct security_hook_list *P; \
|
||||
\
|
||||
list_for_each_entry(P, &security_hook_heads.FUNC, list) \
|
||||
hlist_for_each_entry(P, &security_hook_heads.FUNC, list) \
|
||||
P->hook.FUNC(__VA_ARGS__); \
|
||||
} while (0)
|
||||
|
||||
@ -210,7 +210,7 @@ EXPORT_SYMBOL(unregister_lsm_notifier);
|
||||
do { \
|
||||
struct security_hook_list *P; \
|
||||
\
|
||||
list_for_each_entry(P, &security_hook_heads.FUNC, list) { \
|
||||
hlist_for_each_entry(P, &security_hook_heads.FUNC, list) { \
|
||||
RC = P->hook.FUNC(__VA_ARGS__); \
|
||||
if (RC != 0) \
|
||||
break; \
|
||||
@ -317,7 +317,7 @@ int security_vm_enough_memory_mm(struct mm_struct *mm, long pages)
|
||||
* agree that it should be set it will. If any module
|
||||
* thinks it should not be set it won't.
|
||||
*/
|
||||
list_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
|
||||
hlist_for_each_entry(hp, &security_hook_heads.vm_enough_memory, list) {
|
||||
rc = hp->hook.vm_enough_memory(mm, pages);
|
||||
if (rc <= 0) {
|
||||
cap_sys_admin = 0;
|
||||
@ -805,7 +805,7 @@ int security_inode_getsecurity(struct inode *inode, const char *name, void **buf
|
||||
/*
|
||||
* Only one module will provide an attribute with a given name.
|
||||
*/
|
||||
list_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
|
||||
hlist_for_each_entry(hp, &security_hook_heads.inode_getsecurity, list) {
|
||||
rc = hp->hook.inode_getsecurity(inode, name, buffer, alloc);
|
||||
if (rc != -EOPNOTSUPP)
|
||||
return rc;
|
||||
@ -823,7 +823,7 @@ int security_inode_setsecurity(struct inode *inode, const char *name, const void
|
||||
/*
|
||||
* Only one module will provide an attribute with a given name.
|
||||
*/
|
||||
list_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
|
||||
hlist_for_each_entry(hp, &security_hook_heads.inode_setsecurity, list) {
|
||||
rc = hp->hook.inode_setsecurity(inode, name, value, size,
|
||||
flags);
|
||||
if (rc != -EOPNOTSUPP)
|
||||
@ -1114,9 +1114,9 @@ int security_task_movememory(struct task_struct *p)
|
||||
}
|
||||
|
||||
int security_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
int sig, u32 secid)
|
||||
int sig, const struct cred *cred)
|
||||
{
|
||||
return call_int_hook(task_kill, 0, p, info, sig, secid);
|
||||
return call_int_hook(task_kill, 0, p, info, sig, cred);
|
||||
}
|
||||
|
||||
int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
@ -1126,7 +1126,7 @@ int security_task_prctl(int option, unsigned long arg2, unsigned long arg3,
|
||||
int rc = -ENOSYS;
|
||||
struct security_hook_list *hp;
|
||||
|
||||
list_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
|
||||
hlist_for_each_entry(hp, &security_hook_heads.task_prctl, list) {
|
||||
thisrc = hp->hook.task_prctl(option, arg2, arg3, arg4, arg5);
|
||||
if (thisrc != -ENOSYS) {
|
||||
rc = thisrc;
|
||||
@ -1651,7 +1651,7 @@ int security_xfrm_state_pol_flow_match(struct xfrm_state *x,
|
||||
* For speed optimization, we explicitly break the loop rather than
|
||||
* using the macro
|
||||
*/
|
||||
list_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
|
||||
hlist_for_each_entry(hp, &security_hook_heads.xfrm_state_pol_flow_match,
|
||||
list) {
|
||||
rc = hp->hook.xfrm_state_pol_flow_match(x, xp, fl);
|
||||
break;
|
||||
|
||||
@ -4156,16 +4156,19 @@ static int selinux_task_movememory(struct task_struct *p)
|
||||
}
|
||||
|
||||
static int selinux_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
int sig, u32 secid)
|
||||
int sig, const struct cred *cred)
|
||||
{
|
||||
u32 secid;
|
||||
u32 perm;
|
||||
|
||||
if (!sig)
|
||||
perm = PROCESS__SIGNULL; /* null signal; existence test */
|
||||
else
|
||||
perm = signal_to_av(sig);
|
||||
if (!secid)
|
||||
if (!cred)
|
||||
secid = current_sid();
|
||||
else
|
||||
secid = cred_sid(cred);
|
||||
return avc_has_perm(&selinux_state,
|
||||
secid, task_sid(p), SECCLASS_PROCESS, perm, NULL);
|
||||
}
|
||||
|
||||
@ -2228,15 +2228,13 @@ static int smack_task_movememory(struct task_struct *p)
|
||||
* @p: the task object
|
||||
* @info: unused
|
||||
* @sig: unused
|
||||
* @secid: identifies the smack to use in lieu of current's
|
||||
* @cred: identifies the cred to use in lieu of current's
|
||||
*
|
||||
* Return 0 if write access is permitted
|
||||
*
|
||||
* The secid behavior is an artifact of an SELinux hack
|
||||
* in the USB code. Someday it may go away.
|
||||
*/
|
||||
static int smack_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
int sig, u32 secid)
|
||||
int sig, const struct cred *cred)
|
||||
{
|
||||
struct smk_audit_info ad;
|
||||
struct smack_known *skp;
|
||||
@ -2252,17 +2250,17 @@ static int smack_task_kill(struct task_struct *p, struct siginfo *info,
|
||||
* Sending a signal requires that the sender
|
||||
* can write the receiver.
|
||||
*/
|
||||
if (secid == 0) {
|
||||
if (cred == NULL) {
|
||||
rc = smk_curacc(tkp, MAY_DELIVER, &ad);
|
||||
rc = smk_bu_task(p, MAY_DELIVER, rc);
|
||||
return rc;
|
||||
}
|
||||
/*
|
||||
* If the secid isn't 0 we're dealing with some USB IO
|
||||
* If the cred isn't NULL we're dealing with some USB IO
|
||||
* specific behavior. This is not clean. For one thing
|
||||
* we can't take privilege into account.
|
||||
*/
|
||||
skp = smack_from_secid(secid);
|
||||
skp = smk_of_task(cred->security);
|
||||
rc = smk_access(skp, tkp, MAY_DELIVER, &ad);
|
||||
rc = smk_bu_note("USB signal", skp, tkp, MAY_DELIVER, rc);
|
||||
return rc;
|
||||
|
||||
Loading…
Reference in New Issue
Block a user