From: Andreas Henriksson <andreas@fatal.se>
Date: Fri, 13 Jun 2014 16:48:21 +0000 (+0200)
Subject: udev: fix invalid free() in enable_name_policy()
X-Git-Tag: v215~439
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=commitdiff_plain;h=f8a0bb5285024b6ce372c3157e761e6543ebdcd2

udev: fix invalid free() in enable_name_policy()

static bool enable_name_policy(...) in ./src/udev/net/link-config.c
calls proc_cmdline(...) to get "line" initialized, but
proc_cmdline(...) does not guarantee that atleast when both
conditions (detect_container(NULL) > 0) and
read_full_file(...) returned < 0.
---

diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index a9acc3ddb..7a9d01bc1 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -185,7 +185,7 @@ static int load_link(link_config_ctx *ctx, const char *filename) {
 }
 
 static bool enable_name_policy(void) {
-        _cleanup_free_ char *line;
+        _cleanup_free_ char *line = NULL;
         char *w, *state;
         int r;
         size_t l;