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| author | Pavel Skripkin <[email protected]> | 2021-09-02 19:04:00 +0000 |
|---|---|---|
| committer | Steffen Klassert <[email protected]> | 2021-09-09 10:12:17 +0000 |
| commit | 3c10ffddc61f8a1a59e29a110ba70b47e679206a (patch) | |
| tree | 7af23af0a5764faae0f99988c410e224cbaf44dc /net/unix/af_unix.c | |
| parent | Merge tag 'net-5.15-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/net... (diff) | |
| download | kernel-3c10ffddc61f8a1a59e29a110ba70b47e679206a.tar.gz kernel-3c10ffddc61f8a1a59e29a110ba70b47e679206a.zip | |
net: xfrm: fix shift-out-of-bounds in xfrm_get_default
Syzbot hit shift-out-of-bounds in xfrm_get_default. The problem was in
missing validation check for user data.
up->dirmask comes from user-space, so we need to check if this value
is less than XFRM_USERPOLICY_DIRMASK_MAX to avoid shift-out-of-bounds bugs.
Fixes: 2d151d39073a ("xfrm: Add possibility to set the default to block if we have no policy")
Reported-and-tested-by: [email protected]
Signed-off-by: Pavel Skripkin <[email protected]>
Signed-off-by: Steffen Klassert <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions