From 513eb27dae4e42277f91bf746b3c3dcb9d633ead Mon Sep 17 00:00:00 2001 From: Hans Dedecker Date: Mon, 16 Apr 2018 13:02:28 +0200 Subject: [PATCH] system-linux: check ioctl return value in system_vlan() Detected by Coverity in CID 1433754 Signed-off-by: Hans Dedecker --- system-linux.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/system-linux.c b/system-linux.c index 0b594f6..9b654d1 100644 --- a/system-linux.c +++ b/system-linux.c @@ -1250,7 +1250,8 @@ static int system_vlan(struct device *dev, int id) .u.name_type = VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD, }; - ioctl(sock_ioctl, SIOCSIFVLAN, &ifr); + if (ioctl(sock_ioctl, SIOCSIFVLAN, &ifr) < 0) + return -1; if (id < 0) { ifr.cmd = DEL_VLAN_CMD; -- 2.25.1