From: Tetsuo Handa Date: Mon, 27 May 2013 11:11:27 +0000 (+0900) Subject: Smack: Fix possible NULL pointer dereference at smk_netlbl_mls() X-Git-Tag: firefly_0821_release~176^2~5790^2~6^2~1 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8cd77a0bd4b4a7d02c2a6926a69585d8088ee721;p=firefly-linux-kernel-4.4.55.git Smack: Fix possible NULL pointer dereference at smk_netlbl_mls() netlbl_secattr_catmap_alloc(GFP_ATOMIC) can return NULL. Signed-off-by: Tetsuo Handa --- 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++)