crypto: sanitize argument for format string
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>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
diff --git a/crypto/algapi.c b/crypto/algapi.c
index 6149a6e..7a1ae87 100644
--- a/crypto/algapi.c
+++ b/crypto/algapi.c
@@ -495,7 +495,8 @@
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);