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security: check for kstrdup() failure in lsm_append()

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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>
This commit is contained in:
Eric Biggers 2018-07-17 10:36:04 -07:00 committed by James Morris
parent 83a68a0679
commit 87ea584332
1 changed files with 2 additions and 0 deletions
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2
security/security.c
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@ -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))