diff options
| author |   guenther <guenther@openbsd.org> | 2016-07-14 05:55:08 +0000 |
|---|---|---|
| committer | guenther <guenther@openbsd.org> | 2016-07-14 05:55:08 +0000 |
| commit | b261876b05beae09af1ac260b35bb38a79ca10da (patch) | |
| tree | 89afa44d16b2b4aef3f285fc1d691373f4618c07 /sys/kern/kern_sig.c | |
| parent | ufs_readdir() buffer was meant to be limited to 64kB; reversed test (diff) | |
| download | wireguard-openbsd-b261876b05beae09af1ac260b35bb38a79ca10da.tar.xz wireguard-openbsd-b261876b05beae09af1ac260b35bb38a79ca10da.zip | |
Prevent silly states via knotes on pids > 2^32 and on nonexistent signals.
ok tedu@
Diffstat (limited to 'sys/kern/kern_sig.c')
| -rw-r--r-- | sys/kern/kern_sig.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sys/kern/kern_sig.c b/sys/kern/kern_sig.c index 0d9eb786495..374e58d9bc4 100644 --- a/sys/kern/kern_sig.c +++ b/sys/kern/kern_sig.c @@ -1,4 +1,4 @@ -/* $OpenBSD: kern_sig.c,v 1.201 2016/07/06 15:53:01 tedu Exp $ */ +/* $OpenBSD: kern_sig.c,v 1.202 2016/07/14 05:55:08 guenther Exp $ */ /* $NetBSD: kern_sig.c,v 1.54 1996/04/22 01:38:32 christos Exp $ */ /* @@ -1824,6 +1824,9 @@ filt_sigattach(struct knote *kn) { struct process *pr = curproc->p_p; + if (kn->kn_id >= NSIG) + return EINVAL; + kn->kn_ptr.p_process = pr; kn->kn_flags |= EV_CLEAR; /* automatically set */ |