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Loopback fix from Mathieu Sauve-Frankel:

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Add missing check for NULL in DIOCCHANGERULE. This prevents a crash
	in certain rare cases.
This commit is contained in:
mlaier 2004-08-12 14:15:42 +00:00
parent dfe06128af
commit 828fffdd89
1 changed files with 3 additions and 2 deletions
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5
sys/contrib/pf/net/pf_ioctl.c
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@ -1,5 +1,5 @@
/* $FreeBSD$ */
/* $OpenBSD: pf_ioctl.c,v 1.112.2.1 2004/04/30 21:43:30 brad Exp $ */
/* $OpenBSD: pf_ioctl.c,v 1.112.2.2 2004/07/24 18:28:12 brad Exp $ */
/*
* Copyright (c) 2001 Daniel Hartmeier
@ -1503,7 +1503,8 @@ pfioctl(struct cdev *dev, u_long cmd, caddr_t addr, int flags, struct proc *p)
while ((oldrule != NULL) && (oldrule->nr != pcr->nr))
oldrule = TAILQ_NEXT(oldrule, entries);
if (oldrule == NULL) {
pf_rm_rule(NULL, newrule);
if (newrule != NULL)
pf_rm_rule(NULL, newrule);
error = EINVAL;
splx(s);
break;