linux-kernel - Re: [49/74] netfilter: h323: bug in parsing of ASN1 SEQOF field

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Message-ID: <4DA5C95B.6000706@trash.net>
Date:	Wed, 13 Apr 2011 18:03:39 +0200
From:	Patrick McHardy <kaber@...sh.net>
To:	Greg KH <gregkh@...e.de>
CC:	linux-kernel@...r.kernel.org, stable@...nel.org,
	stable-review@...nel.org, torvalds@...ux-foundation.org,
	akpm@...ux-foundation.org, alan@...rguk.ukuu.org.uk,
	David Sterba <dsterba@...e.cz>
Subject: Re: [49/74] netfilter: h323: bug in parsing of ASN1 SEQOF field

Am 13.04.2011 17:51, schrieb Greg KH:
> 2.6.32-longterm review patch.  If anyone has any objections, please let us know.
> 
> ------------------
> 
> From: David Sterba <dsterba@...e.cz>
> 
> commit b4232a22776aa5d063f890d21ca69870dbbe431b upstream.
> 
> Static analyzer of clang found a dead store which appears to be a bug in
> reading count of items in SEQOF field, only the lower byte of word is
> stored. This may lead to corrupted read and communication shutdown.
> 
> The bug has been in the module since it's first inclusion into linux
> kernel.
> 
> [Patrick: the bug is real, but without practical consequence since the
>  largest amount of sequence-of members we parse is 30.]

As mentioned in the changelog, I don't think this patch is of any
relevance for -stable since its a purely theoretical problem.
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