linux-kernel - Re: [PATCH crypto -v4 1/2] AES-NI: Add support to access underlying blkcipher under cryptd ablkcipher

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20090115084750.GA32239@gondor.apana.org.au>
Date:	Thu, 15 Jan 2009 19:47:50 +1100
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Huang Ying <ying.huang@...el.com>
Cc:	Sebastian Siewior <linux-crypto@...breakpoint.cc>,
	linux-kernel@...r.kernel.org, linux-crypto@...r.kernel.org
Subject: Re: [PATCH crypto -v4 1/2] AES-NI: Add support to access
	underlying blkcipher under cryptd ablkcipher

On Thu, Jan 15, 2009 at 04:28:33PM +0800, Huang Ying wrote:
>
> +	tfm = crypto_alloc_ablkcipher(cryptd_alg_name, type, mask);
> +	BUG_ON(crypto_ablkcipher_tfm(tfm)->__crt_alg->cra_module !=
> +	       THIS_MODULE);

You need to check whether tfm is an error before dereferencing it.
Also it's probably better to free the tfm and return an error rather
than invoking BUG.

> --- a/include/crypto/algapi.h
> +++ b/include/crypto/algapi.h

Please create a new file for this, e.g., include/crypto/cryptd.h.

Thanks,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/