linux-kernel - Re: [PATCH] fix out of bound read in __test

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Message-ID: <20160201142640.GA11363@gondor.apana.org.au>
Date:	Mon, 1 Feb 2016 22:26:40 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Jerome Marchand <jmarchan@...hat.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] fix out of bound read in __test_aead()

On Fri, Jan 29, 2016 at 02:10:09PM +0100, Jerome Marchand wrote:
> __test_aead() reads MAX_IVLEN bytes from template[i].iv, but the
> actual length of the initialisation vector can be shorter.
> The length of the IV is already calculated earlier in the
> function. Let's just reuses that.
> This fix an out-of-bound error detected by KASan.
> 
> Signed-off-by: Jerome Marchand <jmarchan@...hat.com>

This patch creates a new warning that iv_len may be uninitialised.

Please fix this and resubmit.

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