WSL2-Linux-Kernel/security/smack
Tetsuo Handa c6293f673f smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi
[ Upstream commit 0934ad42bb ]

syzbot is reporting UAF at cipso_v4_doi_search() [1], for smk_cipso_doi()
is calling kfree() without removing from the cipso_v4_doi_list list after
netlbl_cfg_cipsov4_map_add() returned an error. We need to use
netlbl_cfg_cipsov4_del() in order to remove from the list and wait for
RCU grace period before kfree().

Link: https://syzkaller.appspot.com/bug?extid=93dba5b91f0fed312cbd [1]
Reported-by: syzbot <syzbot+93dba5b91f0fed312cbd@syzkaller.appspotmail.com>
Signed-off-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
Fixes: 6c2e8ac095 ("netlabel: Update kernel configuration API")
Signed-off-by: Casey Schaufler <casey@schaufler-ca.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-18 19:16:39 +01:00
..
Kconfig treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
Makefile treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
smack.h smack: mark 'smack_enabled' global variable as __initdata 2021-07-20 10:34:59 -07:00
smack_access.c Smack: Fix wrong semantics in smk_access_entry() 2021-07-20 09:17:36 -07:00
smack_lsm.c selinux,smack: fix subjective/objective credential use mixups 2021-09-23 12:30:59 -04:00
smack_netfilter.c treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
smackfs.c smackfs: use netlbl_cfg_cipsov4_del() for deleting cipso_v4_doi 2021-11-18 19:16:39 +01:00