[10/15] KEYS: checking the input id parameters before finding asymmetric key

Commit Message

David Howells Oct. 12, 2017, 8:17 p.m. UTC

From: Lee, Chun-Yi <[e-mail]>

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 <[e-mail]>
Cc: Herbert Xu <[e-mail]>
Cc: "David S. Miller" <[e-mail]>
Signed-off-by: "Lee, Chun-Yi" <[e-mail]>
Signed-off-by: David Howells <[e-mail]>
---

 crypto/asymmetric_keys/asymmetric_type.c |    2 ++
 1 file changed, 2 insertions(+)


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Patch

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;