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5c1acf3fe0
linux/fs/cifs
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Paulo Alcantara 5c1acf3fe0 cifs: fix regression when mounting shares with prefix paths 
The commit 315db9a05b ("cifs: fix leak in cifs_smb3_do_mount() ctx")
revealed an existing bug when mounting shares that contain a prefix
path or DFS links.

cifs_setup_volume_info() requires the @devname to contain the full
path (UNC + prefix) to update the fs context with the new UNC and
prepath values, however we were passing only the UNC
path (old_ctx->UNC) in @device thus discarding any prefix paths.

Instead of concatenating both old_ctx->{UNC,prepath} and pass it in
@devname, just keep the dup'ed values of UNC and prepath in
cifs_sb->ctx after calling smb3_fs_context_dup(), and fix
smb3_parse_devname() to correctly parse and not leak the new UNC and
prefix paths.

Cc: <stable@vger.kernel.org> # v5.11+
Fixes: 315db9a05b ("cifs: fix leak in cifs_smb3_do_mount() ctx")
Signed-off-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Acked-by: David Disseldorp <ddiss@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
2021-05-04 11:52:56 -05:00
..
asn1.c cifs: remove bogus debug code 2020-10-22 12:17:52 -05:00
cache.c cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
cifs_debug.c cifs: export supported mount options via new mount_params /proc file 2021-04-25 16:28:24 -05:00
cifs_debug.h cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifs_dfs_ref.c cifs: allocate buffer in the caller of build_path_from_dentry() 2021-04-25 16:28:23 -05:00
cifs_fs_sb.h cifs: add shutdown support 2021-05-03 11:21:22 -05:00
cifs_ioctl.h smb3.1.1: allow dumping GCM256 keys to improve debugging of encrypted shares 2021-05-03 11:43:37 -05:00
cifs_spnego.c cifs: switch servers depending on binding state 2019-11-25 01:16:30 -06:00
cifs_spnego.h
cifs_swn.c fs/cifs/: fix misspellings using codespell tool 2021-03-19 00:37:51 -05:00
cifs_swn.h cifs: simplify SWN code with dummy funcs instead of ifdefs 2021-04-25 16:28:22 -05:00
cifs_unicode.c Convert trailing spaces and periods in path components 2020-10-11 23:57:18 -05:00
cifs_unicode.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifs_uniupr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
cifsacl.c cifs: Remove useless variable 2021-04-25 16:28:22 -05:00
cifsacl.h cifs: Fix cifsacl ACE mask for group and others. 2021-02-22 21:20:44 -06:00
cifsencrypt.c cifs: change confusing field serverName (to ip_addr) 2021-02-22 21:20:43 -06:00
cifsfs.c cifs: fix regression when mounting shares with prefix paths 2021-05-04 11:52:56 -05:00
cifsfs.h cifs: update internal version number 2021-04-25 23:59:27 -05:00
cifsglob.h cifs: Deferred close for files 2021-05-03 11:20:35 -05:00
cifspdu.h cifs: cifspdu.h: Replace one-element array with flexible-array member 2021-04-25 16:28:22 -05:00
cifsproto.h cifs: Deferred close for files 2021-05-03 11:20:35 -05:00
cifsroot.c cifs: Standardize logging output 2020-06-01 00:10:18 -05:00
cifssmb.c cifs: rename the *_shroot* functions to *_cached_dir* 2021-04-25 16:28:23 -05:00
connect.c cifs: fix regression when mounting shares with prefix paths 2021-05-04 11:52:56 -05:00
dfs_cache.c cifs: constify get_normalized_path() properly 2021-04-25 16:28:23 -05:00
dfs_cache.h cifs: rename smb_vol as smb3_fs_context and move it to fs_context.h 2020-12-13 19:12:07 -06:00
dir.c cifs: add shutdown support 2021-05-03 11:21:22 -05:00
dns_resolve.c keys: Pass the network namespace into request_key mechanism 2019-06-27 23:02:12 +01:00
dns_resolve.h
export.c docs: fs: convert docs without extension to ReST 2019-07-31 13:31:05 -06:00
file.c cifs: add shutdown support 2021-05-03 11:21:22 -05:00
fs_context.c cifs: fix regression when mounting shares with prefix paths 2021-05-04 11:52:56 -05:00
fs_context.h smb3: add rasize mount parameter to improve readahead performance 2021-04-25 23:59:08 -05:00
fscache.c cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
fscache.h cifs: Make extract_sharename function public 2020-12-14 09:16:22 -06:00
inode.c cifs: add shutdown support 2021-05-03 11:21:22 -05:00
ioctl.c smb3.1.1: allow dumping keys for multiuser mounts 2021-05-03 11:45:36 -05:00
Kconfig cifs: On cifs_reconnect, resolve the hostname again. 2021-04-07 21:29:36 -05:00
link.c cifs: add shutdown support 2021-05-03 11:21:22 -05:00
Makefile cifs: On cifs_reconnect, resolve the hostname again. 2021-04-07 21:29:36 -05:00
misc.c cifs: Deferred close for files 2021-05-03 11:20:35 -05:00
netlink.c cifs: Set witness notification handler for messages from userspace daemon 2020-12-14 09:16:22 -06:00
netlink.h cifs: Register generic netlink family 2020-12-14 09:16:22 -06:00
netmisc.c cifs`: handle ERRBaduid for SMB1 2020-08-02 18:00:25 -05:00
nterr.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
nterr.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 61 2019-05-24 17:36:45 +02:00
ntlmssp.h cifs: dynamic allocation of ntlmssp blob 2016-06-23 23:45:07 -05:00
readdir.c cifs: allocate buffer in the caller of build_path_from_dentry() 2021-04-25 16:28:23 -05:00
rfc1002pdu.h
sess.c cifs: fix credit accounting for extra channel 2021-03-06 11:35:57 -06:00
smb1ops.c cifs: constify path argument of ->make_node() 2021-04-25 16:28:23 -05:00
smb2file.c cifs: allow unlock flock and OFD lock across fork 2020-03-22 22:49:09 -05:00
smb2glob.h cifs: Adjust key sizes and key generation routines for AES256 encryption 2021-03-26 07:49:39 -05:00
smb2inode.c cifs: rename the *_shroot* functions to *_cached_dir* 2021-04-25 16:28:23 -05:00
smb2maperror.c cifs: map STATUS_ACCOUNT_LOCKED_OUT to -EACCES 2020-10-15 23:58:14 -05:00
smb2misc.c cifs: add a timestamp to track when the lease of the cached dir was taken 2021-04-25 16:28:23 -05:00
smb2ops.c smb3: limit noisy error 2021-04-25 16:28:24 -05:00
smb2pdu.c cifs: rename the *_shroot* functions to *_cached_dir* 2021-04-25 16:28:23 -05:00
smb2pdu.h SMB3: update structures for new compression protocol definitions 2021-04-25 16:28:23 -05:00
smb2proto.h cifs: add a function to get a cached dir based on its dentry 2021-04-25 16:28:23 -05:00
smb2status.h cifs: don't use __constant_cpu_to_le32() 2019-05-07 23:24:54 -05:00
smb2transport.c cifs: Adjust key sizes and key generation routines for AES256 encryption 2021-03-26 07:49:39 -05:00
smbdirect.c cifs: Fix fall-through warnings for Clang 2020-12-13 19:12:07 -06:00
smbdirect.h cifs: smbd: Do not schedule work to send immediate packet on every receive 2020-04-07 12:41:16 -05:00
smbencrypt.c fs: cifs: move from the crypto cipher API to the new DES library interface 2019-08-22 14:57:34 +10:00
smberr.h
smbfsctl.h smb3: add some missing definitions from MS-FSCC 2020-10-23 15:38:10 -05:00
trace.c smb3: Cleanup license mess 2019-01-24 09:37:33 -06:00
trace.h cifs: Identify a connection by a conn_id. 2021-02-16 15:48:02 -06:00
transport.c cifs: Fix preauth hash corruption 2021-03-14 18:14:32 -05:00
unc.c cifs: don't cargo-cult strndup() 2021-04-25 16:28:23 -05:00
winucase.c Replace HTTP links with HTTPS ones: CIFS 2020-07-05 14:23:38 -06:00
xattr.c cifs: add shutdown support 2021-05-03 11:21:22 -05:00