From 87ea58433208d17295e200d56be5e2a4fe4ce7d6 Mon Sep 17 00:00:00 2001
From: Eric Biggers <ebiggers@google.com>
Date: Tue, 17 Jul 2018 10:36:04 -0700
Subject: [PATCH] security: check for kstrdup() failure in lsm_append()
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>
---
security/security.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/security/security.c b/security/security.c
index 6e149d0ffe333..b49ee810371be 100644
--- a/security/security.c
+++ b/security/security.c
@@ -118,6 +118,8 @@ static int lsm_append(char *new, char **result)
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))
--
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