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Date: Mon, 07 Aug 2017 13:22:46 -0400
From: Jesse Hertz <>
Subject: Re: Cve issue discussion

fwiw, double check and make sure the issue occurs in libpng without ASAN. Sometimes ASAN can cause "heisenbugs" which only happen if ASAN is used.

> On Aug 7, 2017, at 9:57 AM, Glenn Randers-Pehrson <> wrote:
> OK I'll request a CVE for this libpng issue.
> Glenn
> On Mon, Aug 7, 2017 at 9:05 AM, John Haxby <> wrote:
>> On 07/08/17 13:47, Glenn Randers-Pehrson wrote:
>>> It's not causing a crash, just a delay.  You'll safely get either an OOM
>>> message or an EOF message.and no memory leak.
>> That's scant comfort when your browser is the one hit by the OOM killer
>> and then again when you restart it.  And also while you're wondering
>> what's going on because your laptop is basically completely
>> non-responsive ...
>> So yes, it's a remote DoS and definitely worth a CVE.  We have had other
>> similar CVEs in the past with image handling libraries not being
>> sufficiently paranoid.
>> jch
>>> Glenn
>>> On Mon, Aug 7, 2017 at 8:37 AM, Marcus Meissner <> wrote:
>>>> Hi,
>>>> if it could crash the image reader I would consider it "remote denial of service"
>>>> classed and CVE worthy.

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