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util_resolve_sys_link(): fix possible buffer overflow
author
Florian Zumbiehl
<florz@florz.de>
Tue, 1 Sep 2009 10:38:16 +0000
(12:38 +0200)
committer
Kay Sievers
<kay.sievers@vrfy.org>
Tue, 1 Sep 2009 10:38:16 +0000
(12:38 +0200)
libudev/libudev-util.c
patch
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diff --git
a/libudev/libudev-util.c
b/libudev/libudev-util.c
index dcc4a0fd16e78e9270a352f13da947c4d60d0e90..61cd963421a4842db897318b0aa83537ef29aac5 100644
(file)
--- a/
libudev/libudev-util.c
+++ b/
libudev/libudev-util.c
@@
-56,13
+56,13
@@
int util_resolve_sys_link(struct udev *udev, char *syspath, size_t size)
{
char link_target[UTIL_PATH_SIZE];
-
in
t len;
+
ssize_
t len;
int i;
int back;
char *base;
len = readlink(syspath, link_target, sizeof(link_target));
- if (len <= 0)
+ if (len <= 0
|| len == (ssize_t)sizeof(link_target)
)
return -1;
link_target[len] = '\0';
dbg(udev, "path link '%s' points to '%s'\n", syspath, link_target);