WSL2-Linux-Kernel/security/yama
Kees Cook 41c13bfcc4 Yama: Check for pid death before checking ancestry
commit 9474f4e7cd upstream.

It's possible that a pid has died before we take the rcu lock, in which
case we can't walk the ancestry list as it may be detached. Instead, check
for death first before doing the walk.

Reported-by: syzbot+a9ac39bf55329e206219@syzkaller.appspotmail.com
Fixes: 2d514487fa ("security: Yama LSM")
Cc: stable@vger.kernel.org
Suggested-by: Oleg Nesterov <oleg@redhat.com>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-01-23 08:09:48 +01:00
..
Kconfig doc: ReSTify Yama.txt 2017-05-18 10:33:04 -06:00
Makefile
yama_lsm.c Yama: Check for pid death before checking ancestry 2019-01-23 08:09:48 +01:00