linux-kernel - [PATCH 4.16 057/196] CIFS: fix sha512 check in cifs_crypto_secmech

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Date:   Sun, 22 Apr 2018 15:51:17 +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,
        "Gustavo A. R. Silva" <gustavo@...eddedor.com>,
        Aurelien Aptel <aaptel@...e.com>,
        Steve French <smfrench@...il.com>
Subject: [PATCH 4.16 057/196] CIFS: fix sha512 check in cifs_crypto_secmech_release

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

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

From: Gustavo A. R. Silva <gustavo@...eddedor.com>

commit 70e80655f58e17a2e38e577e1b4fa7a8c99619a0 upstream.

It seems this is a copy-paste error and that the proper variable to use
in this particular case is _sha512_ instead of _md5_.

Addresses-Coverity-ID: 1465358 ("Copy-paste error")
Fixes: 1c6614d229e7 ("CIFS: add sha512 secmech")
Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
Reviewed-by: Aurelien Aptel <aaptel@...e.com>
CC: Stable <stable@...r.kernel.org>
Signed-off-by: Steve French <smfrench@...il.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 fs/cifs/cifsencrypt.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -829,7 +829,7 @@ cifs_crypto_secmech_release(struct TCP_S
 		server->secmech.md5 = NULL;
 	}

-	if (server->secmech.md5) {
+	if (server->secmech.sha512) {
 		crypto_free_shash(server->secmech.sha512);
 		server->secmech.sha512 = NULL;
 	}