diff options
| -rw-r--r-- | security/apparmor/match.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/security/apparmor/match.c b/security/apparmor/match.c index b477352305ed..651dbb6e38b8 100644 --- a/security/apparmor/match.c +++ b/security/apparmor/match.c @@ -206,6 +206,12 @@ static int verify_dfa(struct aa_dfa *dfa) pr_err("AppArmor DFA state with invalid match flags"); goto out; } + if ((BASE_TABLE(dfa)[i] & MATCH_FLAG_DIFF_ENCODE)) { + if (!(dfa->flags & YYTH_FLAG_DIFF_ENCODE)) { + pr_err("AppArmor DFA diff encoded transition state without header flag"); + goto out; + } + } if (base_idx(BASE_TABLE(dfa)[i]) + 255 >= trans_count) { pr_err("AppArmor DFA next/check upper bounds error\n"); goto out; |