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| author | kib <kib@FreeBSD.org> | 2015-01-22 09:07:02 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2015-01-22 09:07:02 +0000 |
| commit | 2247a6699648e6e29de6f734e0cc94db00c55f54 (patch) | |
| tree | da538dc24b1b35ffca5926c6578b7eeab05655dc | |
| parent | f831eecaca2fe0d91aed84e402bf0d8bfd00f507 (diff) | |
| download | FreeBSD-src-2247a6699648e6e29de6f734e0cc94db00c55f54.zip FreeBSD-src-2247a6699648e6e29de6f734e0cc94db00c55f54.tar.gz | |
MFC r277236:
For sigaction(2), ignore possible garbage in sa_flags for sa_handler
== SIG_DFL or SIG_IGN.
| -rw-r--r-- | sys/kern/kern_sig.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 05dd103..cdb5f93 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -658,9 +658,10 @@ kern_sigaction(td, sig, act, oact, flags) if (!_SIG_VALID(sig)) return (EINVAL); - if (act != NULL && (act->sa_flags & ~(SA_ONSTACK | SA_RESTART | - SA_RESETHAND | SA_NOCLDSTOP | SA_NODEFER | SA_NOCLDWAIT | - SA_SIGINFO)) != 0) + if (act != NULL && act->sa_handler != SIG_DFL && + act->sa_handler != SIG_IGN && (act->sa_flags & ~(SA_ONSTACK | + SA_RESTART | SA_RESETHAND | SA_NOCLDSTOP | SA_NODEFER | + SA_NOCLDWAIT | SA_SIGINFO)) != 0) return (EINVAL); PROC_LOCK(p); |
