linux/security
Antony Antony c7a5899eb2 xfrm: redact SA secret with lockdown confidentiality
redact XFRM SA secret in the netlink response to xfrm_get_sa()
or dumpall sa.
Enable lockdown, confidentiality mode, at boot or at run time.

e.g. when enabled:
cat /sys/kernel/security/lockdown
none integrity [confidentiality]

ip xfrm state
src 172.16.1.200 dst 172.16.1.100
	proto esp spi 0x00000002 reqid 2 mode tunnel
	replay-window 0
	aead rfc4106(gcm(aes)) 0x0000000000000000000000000000000000000000 96

note: the aead secret is redacted.
Redacting secret is also a FIPS 140-2 requirement.

v1->v2
 - add size checks before memset calls
v2->v3
 - replace spaces with tabs for consistency
v3->v4
 - use kernel lockdown instead of a /proc setting
v4->v5
 - remove kconfig option

Reviewed-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Antony Antony <antony.antony@secunet.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
2020-11-27 11:03:06 +01:00
..
apparmor treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bpf bpf: Implement bpf_local_storage for inodes 2020-08-25 15:00:04 -07:00
integrity ima: Replace zero-length array with flexible-array member 2020-10-29 17:22:59 -05:00
keys task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
loadpin LSM: Add "contents" flag to kernel_read_file hook 2020-10-05 13:37:03 +02:00
lockdown Merge branch 'next-general' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security 2020-06-02 17:36:24 -07:00
safesetid LSM: SafeSetID: Fix warnings reported by test bot 2020-10-13 09:17:36 -07:00
selinux Char/Misc driver patches for 5.10-rc1 2020-10-15 10:01:51 -07:00
smack Smack LSM changes for Linux 5.10 2020-10-13 16:18:51 -07:00
tomoyo tomoyo: Loosen pathname/domainname validation. 2020-10-12 19:53:34 +09:00
yama task_work: cleanup notification modes 2020-10-17 15:05:30 -06:00
commoncap.c exec: Compute file based creds only once 2020-05-29 22:00:54 -05:00
device_cgroup.c device_cgroup: Fix RCU list debugging warning 2020-08-20 11:25:03 -07:00
inode.c Merge branch 'work.mount0' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2019-07-19 10:42:02 -07:00
Kconfig Replace HTTP links with HTTPS ones: security 2020-08-06 12:00:05 -07:00
Kconfig.hardening security: allow using Clang's zero initialization for stack variables 2020-06-16 02:06:23 -07:00
lsm_audit.c audit: purge audit_log_string from the intra-kernel audit API 2020-07-21 11:12:31 -04:00
Makefile device_cgroup: Cleanup cgroup eBPF device filter code 2020-04-13 14:41:54 -04:00
min_addr.c sysctl: pass kernel pointers to ->proc_handler 2020-04-27 02:07:40 -04:00
security.c xfrm: redact SA secret with lockdown confidentiality 2020-11-27 11:03:06 +01:00