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Bug 620008 (CVE-2016-9296) - <app-arch/p7zip-16.02-r3: Denial of Service vulnerability affects the 16.02 and many old versions of p7zip (null pointer check)
Summary: <app-arch/p7zip-16.02-r3: Denial of Service vulnerability affects the 16.02 a...
Alias: CVE-2016-9296
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [noglsa cve]
Depends on:
Reported: 2017-05-28 12:18 UTC by Andrey Ovcharov
Modified: 2019-08-10 17:20 UTC (History)
1 user (show)

See Also:
Package list:
Runtime testing required: ---

p7zip-16.02-CVE-2016-9296.patch (p7zip-16.02-CVE-2016-9296.patch,1.00 KB, patch)
2017-05-28 12:18 UTC, Andrey Ovcharov
no flags Details | Diff

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Description Andrey Ovcharov 2017-05-28 12:18:09 UTC
Created attachment 474572 [details, diff]

"A null pointer dereference bug affects the 16.02 and many old versions of p7zip. A lack of null pointer check for the variable folders.PackPositions in function CInArchive::ReadAndDecodePackedStreams in CPP/7zip/Archive/7z/7zIn.cpp, as used in the library and in 7z applications, will cause a crash and a denial of service when decoding malformed 7z files."
Comment 1 D'juan McDonald (domhnall) 2017-09-04 01:52:18 UTC
@maintainer(s), 16.02-r1 is already in tree. call for stable if needed. Note the discussion in $url, patch may be unofficial.

Daj'Uan (jmbailey/mbailey_j)
Gentoo Security Padawan
Comment 2 Matthew Thode ( prometheanfire ) archtester Gentoo Infrastructure gentoo-dev Security 2018-05-09 04:07:10 UTC
p7zip-16.02-r3 fixes it, I'd like to stablize whatever includes CVE-2018-10115 though
Comment 3 Aaron Bauman (RETIRED) gentoo-dev 2019-08-10 17:20:35 UTC
not sure how this got missed...