From c231b9d04be757bd8a9953737ed2c22ffb987f49 Mon Sep 17 00:00:00 2001
From: Kees Cook <keescook@chromium.org>
Date: Wed, 3 Jul 2013 15:01:15 -0700
Subject: crypto: sanitize argument for format string

commit 1c8fca1d92e14859159a82b8a380d220139b7344 upstream.

The template lookup interface does not provide a way to use format
strings, so make sure that the interface cannot be abused accidentally.

Signed-off-by: Kees Cook <keescook@chromium.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 crypto/algapi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'crypto')

diff --git a/crypto/algapi.c b/crypto/algapi.c
index 6149a6e0964..7a1ae87f168 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -495,7 +495,8 @@ static struct crypto_template *__crypto_lookup_template(const char *name)
 
 struct crypto_template *crypto_lookup_template(const char *name)
 {
-	return try_then_request_module(__crypto_lookup_template(name), name);
+	return try_then_request_module(__crypto_lookup_template(name), "%s",
+				       name);
 }
 EXPORT_SYMBOL_GPL(crypto_lookup_template);
 
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