From: John Johansen <john.johansen@xxxxxxxxxxxxx> commit 5f20fdfed16bc599a325a145bf0123a8e1c9beea upstream. BugLink: http://bugs.launchpad.net/bugs/1592547 If unpack_dfa() returns NULL due to the dfa not being present, profile_unpack() is not checking if the dfa is not present (NULL). Signed-off-by: John Johansen <john.johansen@xxxxxxxxxxxxx> Signed-off-by: Willy Tarreau <w@xxxxxx> --- security/apparmor/policy_unpack.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/security/apparmor/policy_unpack.c b/security/apparmor/policy_unpack.c index 6b22135..55ff3ee 100644 --- a/security/apparmor/policy_unpack.c +++ b/security/apparmor/policy_unpack.c @@ -571,6 +571,9 @@ static struct aa_profile *unpack_profile(struct aa_ext *e) error = PTR_ERR(profile->policy.dfa); profile->policy.dfa = NULL; goto fail; + } else if (!profile->policy.dfa) { + error = -EPROTO; + goto fail; } if (!unpack_u32(e, &profile->policy.start[0], "start")) /* default start state */ -- 2.8.0.rc2.1.gbe9624a