linux-kernel - Re: [PATCH v2] ARM64: crypto: do not call crypto_unregister

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] [day] [month] [year] [list]

Message-ID: <20171129064009.GP21575@gondor.apana.org.au>
Date:   Wed, 29 Nov 2017 17:40:09 +1100
From:   Herbert Xu <herbert@...dor.apana.org.au>
To:     Corentin Labbe <clabbe@...libre.com>
Cc:     davem@...emloft.net, catalin.marinas@....com, will.deacon@....com,
        ard.biesheuvel@...aro.org, linux-crypto@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ARM64: crypto: do not call crypto_unregister_skcipher
 twice on error

On Fri, Nov 24, 2017 at 08:22:07AM +0000, Corentin Labbe wrote:
> When a cipher fails to register in aes_init(), the error path goes thought
> aes_exit() then crypto_unregister_skciphers().
> Since aes_exit calls also crypto_unregister_skcipher, this triggers a
> refcount_t: underflow; use-after-free.
> 
> Signed-off-by: Corentin Labbe <clabbe@...libre.com>

Patch applied.  Thanks.
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt