From: Chun-Yi Lee <joeyli.kernel@gmail.com>
Date: Wed, 4 Oct 2017 08:45:09 +0000 (+0800)
Subject: KEYS: checking the input id parameters before finding asymmetric key
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=b3811d36a3e7e7e8ed660bf01151496cf99cf9ed;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

KEYS: checking the input id parameters before finding asymmetric key

For finding asymmetric key, the input id_0 and id_1 parameters can
not be NULL at the same time. This patch adds the BUG_ON checking
for id_0 and id_1.

Cc: David Howells <dhowells@redhat.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Chun-Yi Lee <jlee@suse.com>
Signed-off-by: David Howells <dhowells@redhat.com>
---

diff --git a/crypto/asymmetric_keys/asymmetric_type.c b/crypto/asymmetric_keys/asymmetric_type.c
index a597f5c5a222..39aecad286fe 100644
--- a/crypto/asymmetric_keys/asymmetric_type.c
+++ b/crypto/asymmetric_keys/asymmetric_type.c
@@ -57,6 +57,8 @@ struct key *find_asymmetric_key(struct key *keyring,
 	char *req, *p;
 	int len;
 
+	BUG_ON(!id_0 && !id_1);
+
 	if (id_0) {
 		lookup = id_0->data;
 		len = id_0->len;