lkml.org 
[lkml]   [2018]   [Sep]   [24]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH 4.18 157/235] security: check for kstrdup() failure in lsm_append()
Date
4.18-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Eric Biggers <ebiggers@google.com>

[ Upstream commit 87ea58433208d17295e200d56be5e2a4fe4ce7d6 ]

lsm_append() should return -ENOMEM if memory allocation failed.

Fixes: d69dece5f5b6 ("LSM: Add /sys/kernel/security/lsm")
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: James Morris <james.morris@microsoft.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
security/security.c | 2 ++
1 file changed, 2 insertions(+)

--- a/security/security.c
+++ b/security/security.c
@@ -118,6 +118,8 @@ static int lsm_append(char *new, char **

if (*result == NULL) {
*result = kstrdup(new, GFP_KERNEL);
+ if (*result == NULL)
+ return -ENOMEM;
} else {
/* Check if it is the last registered name */
if (match_last_lsm(*result, new))

\
 
 \ /
  Last update: 2018-09-24 14:50    [W:0.868 / U:0.172 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site