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| author | Kees Cook <[email protected]> | 2019-01-16 18:31:09 +0000 |
|---|---|---|
| committer | James Morris <[email protected]> | 2019-01-16 20:00:56 +0000 |
| commit | 9474f4e7cd71a633fa1ef93b7daefd44bbdfd482 (patch) | |
| tree | 3484380352e826bd5415a27323d4752d7b1c053a /lib/xarray.c | |
| parent | seccomp: fix UAF in user-trap code (diff) | |
| download | kernel-9474f4e7cd71a633fa1ef93b7daefd44bbdfd482.tar.gz kernel-9474f4e7cd71a633fa1ef93b7daefd44bbdfd482.zip | |
Yama: Check for pid death before checking ancestry
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: [email protected]
Fixes: 2d514487faf1 ("security: Yama LSM")
Cc: [email protected]
Suggested-by: Oleg Nesterov <[email protected]>
Signed-off-by: Kees Cook <[email protected]>
Signed-off-by: James Morris <[email protected]>
Diffstat (limited to 'lib/xarray.c')
0 files changed, 0 insertions, 0 deletions