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: [PATCH] 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(-)
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 6149a6e09643..7a1ae87f1683 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);
--
2.30.9