Re: [PATCH] crypto: x86/sha1: fix coverity CID 1195603

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed 2014-04-30 15:17:54, Milos Vyletel wrote:
> Coverity detected possible use of uninitialized pointer when printing info
> message during module load. While this is higly unlikely to cause any troubles
> simple change in sha1_ssse3_mod_init to make it look like sha256/512 init
> function will fix this.
> 
> 260
>    	6. Condition sha1_transform_asm, taking true branch
> 261        if (sha1_transform_asm) {
> 
> CID 1195603 (#1 of 1): Uninitialized pointer read (UNINIT)
> 7. uninit_use_in_call: Using uninitialized value algo_name when calling printk.
> 262                pr_info("Using %s optimized SHA-1 implementation\n", algo_name);
> 263                return crypto_register_shash(&alg);
> 264        }
> 
> Reported-by: <scan-admin@xxxxxxxxxxxx>
> Signed-off-by: Milos Vyletel <milos.vyletel@xxxxxxxxx>
> ---
>  arch/x86/crypto/sha1_ssse3_glue.c | 22 ++++++++++++----------
>  1 file changed, 12 insertions(+), 10 deletions(-)
> 
> diff --git a/arch/x86/crypto/sha1_ssse3_glue.c b/arch/x86/crypto/sha1_ssse3_glue.c
> index 74d16ef..5352196 100644
> --- a/arch/x86/crypto/sha1_ssse3_glue.c
> +++ b/arch/x86/crypto/sha1_ssse3_glue.c
> @@ -235,31 +235,33 @@ static bool __init avx2_usable(void)
>  
>  static int __init sha1_ssse3_mod_init(void)
>  {
> -	char *algo_name;
> -

Would simple "algo_name = NULL" be enough to fix this?

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
--
To unsubscribe from this list: send the line "unsubscribe linux-crypto" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Kernel]     [Gnu Classpath]     [Gnu Crypto]     [DM Crypt]     [Netfilter]     [Bugtraq]

  Powered by Linux