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Date: Wed, 18 Jan 2012 12:38:51 +0800
From: Eugene Teo <>
CC: "Steven M. Christey" <>
Subject: Re: CVE-2012-0207 kernel: igmp: Avoid zero delay when
 receiving odd mixture of IGMP queries

On 01/10/2012 03:34 PM, Eugene Teo wrote:
> Commit 5b7c84066733c5dfb0e4016d939757b38de189e4 ('ipv4: correct IGMP
> behavior on v3 query during v2-compatibility mode') added yet another
> case for query parsing, which can result in max_delay = 0.  Substitute
> a value of 1, as in the usual v3 case.
> Reported-by: Simon McVittie <smcv <at>>
> References:
> Signed-off-by: Ben Hutchings <ben <at>>
> Introduced in 5b7c8406 2.6.36-rc8
> Thanks, Eugene

Upstream commit:



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