audit: always check the netlink payload length in audit_receive_msg()
BugLink: https://bugs.launchpad.net/bugs/1868628 [ Upstream commit 75612528 ] This patch ensures that we always check the netlink payload length in audit_receive_msg() before we take any action on the payload itself. Cc: stable@vger.kernel.org Reported-by: syzbot+399c44bf1f43b8747403@syzkaller.appspotmail.com Reported-by: syzbot+e4b12d8d202701f08b6d@syzkaller.appspotmail.com Signed-off-by: Paul Moore <paul@paul-moore.com> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com> Signed-off-by: Kelsey Skunberg <kelsey.skunberg@canonical.com>
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