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Date: Thu, 24 Mar 2022 06:43:07 +0100
From: Petr Štetiar <>
Subject: Re: zlib memory corruption on deflate (i.e. compress)

Tavis Ormandy <> [2022-03-23 20:49:49]:

[ adding Mark to the Cc: loop ]


> Greetings list, I was recently trying to track down a reproducible crash
> in a compressor. Believe it or not, it really was a bug in
> zlib-1.2.11 when compressing (not decompressing!) certain inputs.

thank you for letting us know!

> I reported it upstream, but it turns out the issue has been public since
> 2018, but the patch never made it into a release. As far as I know,
> nobody ever assigned it a CVE.
> As far as I can tell, no distros have picked this up.

It's mostly due to the fact, that AFAIK it has never hit the release. Mark,
would it be please possible to do another point release with that security
fix included? Thanks!



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