netdev - [iproute PATCH 07/51] ipmaddr: Avoid accessing uninitialized data

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:   Sat, 12 Aug 2017 14:04:26 +0200
From:   Phil Sutter <phil@....cc>
To:     Stephen Hemminger <stephen@...workplumber.org>
Cc:     netdev@...r.kernel.org
Subject: [iproute PATCH 07/51] ipmaddr: Avoid accessing uninitialized data

Looks like this can only happen if /proc/net/igmp is malformed, but
better be sure.

Signed-off-by: Phil Sutter <phil@....cc>
---
 ip/ipmaddr.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/ip/ipmaddr.c b/ip/ipmaddr.c
index 4f726fdd976f1..85a69e779563d 100644
--- a/ip/ipmaddr.c
+++ b/ip/ipmaddr.c
@@ -136,7 +136,7 @@ static void read_igmp(struct ma_info **result_p)
 
 	while (fgets(buf, sizeof(buf), fp)) {
 		struct ma_info *ma;
-		size_t len;
+		size_t len = 0;
 
 		if (buf[0] != '\t') {
 			sscanf(buf, "%d%s", &m.index, m.name);
-- 
2.13.1