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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>
This commit is contained in:
Kees Cook 2013-07-03 15:01:15 -07:00 committed by Linus Torvalds
parent ffc8b30866
commit 1c8fca1d92
1 changed files with 2 additions and 1 deletions
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3
crypto/algapi.c
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@ -495,7 +495,8 @@ static struct crypto_template *__crypto_lookup_template(const char *name)
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); EXPORT_SYMBOL_GPL(crypto_lookup_template);