crypto: api - Disallow identical driver names

commit 27016f75f5ed47e2d8e0ca75a8ff1f40bc1a5e27 upstream.

Disallow registration of two algorithms with identical driver names.

Cc: <stable@vger.kernel.org>
Reported-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 4fe95c4..85bc279 100644 (file)
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -341,6 +341,7 @@ __crypto_register_alg(struct crypto_alg *alg, struct list_head *algs_to_put)
                }
 
                if (!strcmp(q->cra_driver_name, alg->cra_name) ||
+                   !strcmp(q->cra_driver_name, alg->cra_driver_name) ||
                    !strcmp(q->cra_name, alg->cra_driver_name))
                        goto err;
        }