From: Donghwa Jeong <dh48.jeong@samsung.com>
Date: Mon, 28 May 2018 04:42:45 +0000 (+0900)
Subject: network: fix socket handle leak
X-Git-Tag: lxc-2.0.10~122
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1322cb60d95efa0bc5663581b1558c11b33a789e;p=thirdparty%2Flxc.git

network: fix socket handle leak

Signed-off-by: Donghwa Jeong <dh48.jeong@samsung.com>
---

diff --git a/src/lxc/network.c b/src/lxc/network.c
old mode 100644
new mode 100755
index 863bb9635..a262693e5
--- a/src/lxc/network.c
+++ b/src/lxc/network.c
@@ -1946,7 +1946,12 @@ int setup_private_host_hw_addr(char *veth1)
 	if (sockfd < 0)
 		return -errno;
 
-	snprintf((char *)ifr.ifr_name, IFNAMSIZ, "%s", veth1);
+	err = snprintf((char *)ifr.ifr_name, IFNAMSIZ, "%s", veth1);
+	if (err < 0 || (size_t)err >= IFNAMSIZ) {
+		close(sockfd);
+		return -E2BIG;
+	}
+
 	err = ioctl(sockfd, SIOCGIFHWADDR, &ifr);
 	if (err < 0) {
 		close(sockfd);