linux-kernel - [PATCH 4.4 029/113] crypto: caam

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Date:   Mon,  5 Sep 2016 18:43:52 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Russell King <rmk+kernel@...linux.org.uk>,
        Herbert Xu <herbert@...dor.apana.org.au>
Subject: [PATCH 4.4 029/113] crypto: caam - fix non-hmac hashes

4.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Russell King <rmk+kernel@...linux.org.uk>

commit a0118c8b2be9297aed8e915c60b4013326b256d4 upstream.

Since 6de62f15b581 ("crypto: algif_hash - Require setkey before
accept(2)"), the AF_ALG interface requires userspace to provide a key
to any algorithm that has a setkey method.  However, the non-HMAC
algorithms are not keyed, so setting a key is unnecessary.

Fix this by removing the setkey method from the non-keyed hash
algorithms.

Fixes: 6de62f15b581 ("crypto: algif_hash - Require setkey before accept(2)")
Signed-off-by: Russell King <rmk+kernel@...linux.org.uk>
Signed-off-by: Herbert Xu <herbert@...dor.apana.org.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/crypto/caam/caamhash.c |    1 +
 1 file changed, 1 insertion(+)

--- a/drivers/crypto/caam/caamhash.c
+++ b/drivers/crypto/caam/caamhash.c
@@ -1873,6 +1873,7 @@ caam_hash_alloc(struct caam_hash_templat
 			 template->name);
 		snprintf(alg->cra_driver_name, CRYPTO_MAX_ALG_NAME, "%s",
 			 template->driver_name);
+		t_alg->ahash_alg.setkey = NULL;
 	}
 	alg->cra_module = THIS_MODULE;
 	alg->cra_init = caam_hash_cra_init;