From 1f1988d5256c9705a4f296ed48cdb7e463525ba4 Mon Sep 17 00:00:00 2001 From: Michal Kazior Date: Wed, 25 Sep 2019 14:03:13 +0200 Subject: [PATCH] udhcpc: fix segmentation fault on empty bin opt The following caused udhcpc to segfault: busybox udhcpc -i lo -s /dev/null -x 0x3d: function old new delta udhcp_str2optset 629 641 +12 Signed-off-by: Michal Kazior Signed-off-by: Denys Vlasenko --- networking/udhcp/common.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/networking/udhcp/common.c b/networking/udhcp/common.c index 4a452cdb9..9ec752dfc 100644 --- a/networking/udhcp/common.c +++ b/networking/udhcp/common.c @@ -539,7 +539,7 @@ int FAST_FUNC udhcp_str2optset(const char *const_str, void *arg, if (optflag->flags == OPTION_BIN) { val = strtok(NULL, ""); /* do not split "'q w e'" */ - trim(val); + if (val) trim(val); } else val = strtok(NULL, ", \t"); if (!val) -- 2.25.1