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Commit 8cd77a0b authored by Tetsuo Handa's avatar Tetsuo Handa Committed by Casey Schaufler
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Smack: Fix possible NULL pointer dereference at smk_netlbl_mls() 



netlbl_secattr_catmap_alloc(GFP_ATOMIC) can return NULL.

Signed-off-by: default avatarTetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp>
parent e830b394

security/smack/smack_access.c

+2 −0
Original line number Diff line number Diff line
@@ -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++)