diff options
| author |   dhartmei <dhartmei@openbsd.org> | 2002-08-12 19:36:04 +0000 |
|---|---|---|
| committer | dhartmei <dhartmei@openbsd.org> | 2002-08-12 19:36:04 +0000 |
| commit | e3fcaf8f2490344707c6afd6804aa51d10828c48 (patch) | |
| tree | 8fed98512d82c0726973dab5043ea5e9c078561f | |
| parent | more PermitUserEnvironment; ok markus@ (diff) | |
| download | wireguard-openbsd-e3fcaf8f2490344707c6afd6804aa51d10828c48.tar.xz wireguard-openbsd-e3fcaf8f2490344707c6afd6804aa51d10828c48.zip | |
Catch null pointer deref (segfault), from wilfried@
| -rw-r--r-- | sbin/pfctl/parse.y | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/sbin/pfctl/parse.y b/sbin/pfctl/parse.y index 7fb83b39dd9..12ffe00c63d 100644 --- a/sbin/pfctl/parse.y +++ b/sbin/pfctl/parse.y @@ -1,4 +1,4 @@ -/* $OpenBSD: parse.y,v 1.139 2002/08/06 13:43:33 henning Exp $ */ +/* $OpenBSD: parse.y,v 1.140 2002/08/12 19:36:04 dhartmei Exp $ */ /* * Copyright (c) 2001 Markus Friedl. All rights reserved. @@ -627,11 +627,15 @@ ipspec : ANY { $$ = NULL; } host_list : xhost { $$ = $1; } | host_list comma xhost { - /* both $1 and $3 may be lists, so join them */ - $$ = $3; - while ($3->next) - $3 = $3->next; - $3->next = $1; + if ($3 == NULL) + $$ = $1; + else { + /* both $1 and $3 may be lists, so join them */ + $$ = $3; + while ($3->next) + $3 = $3->next; + $3->next = $1; + } } ; |