crypto: lrw - Free rctx->ext with kzfree

The buffer rctx->ext contains potentially sensitive data and should
be freed with kzfree.

Cc: <stable@vger.kernel.org>
Fixes: 700cb3f5fe75 ("crypto: lrw - Convert to skcipher")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/crypto/lrw.c b/crypto/lrw.c
index a09cdaa6ddf3..954a7064a179 100644
--- a/crypto/lrw.c
+++ b/crypto/lrw.c
@@ -317,7 +317,7 @@ static void exit_crypt(struct skcipher_request *req)
         rctx->left = 0;
 
         if (rctx->ext)
-                kfree(rctx->ext);
+                kzfree(rctx->ext);
 }
 
 static int do_encrypt(struct skcipher_request *req, int err)