From 8cd77a0bd4b4a7d02c2a6926a69585d8088ee721 Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Mon, 27 May 2013 20:11:27 +0900 Subject: Smack: Fix possible NULL pointer dereference at smk_netlbl_mls() netlbl_secattr_catmap_alloc(GFP_ATOMIC) can return NULL. Signed-off-by: Tetsuo Handa --- security/smack/smack_access.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'security/smack') diff --git a/security/smack/smack_access.c b/security/smack/smack_access.c index 53f2327a592f..6a0377f38620 100644 --- a/security/smack/smack_access.c +++ b/security/smack/smack_access.c @@ -403,6 +403,8 @@ int smk_netlbl_mls(int level, char *catset, struct netlbl_lsm_secattr *sap, sap->flags |= NETLBL_SECATTR_MLS_CAT; sap->attr.mls.lvl = level; sap->attr.mls.cat = netlbl_secattr_catmap_alloc(GFP_ATOMIC); + if (!sap->attr.mls.cat) + return -ENOMEM; sap->attr.mls.cat->startbit = 0; for (cat = 1, cp = catset, byte = 0; byte < len; cp++, byte++) -- cgit v1.2.3