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Bug 717154 (CVE-2020-7039) - <app-emulation/qemu-4.2.0-r4: DOS Vulnerability (CVE-2020-7039)
Summary: <app-emulation/qemu-4.2.0-r4: DOS Vulnerability (CVE-2020-7039)
Alias: CVE-2020-7039
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal normal (vote)
Assignee: Gentoo Security
Whiteboard: B2 [glsa+ cve]
Depends on:
Reported: 2020-04-11 22:17 UTC by GLSAMaker/CVETool Bot
Modified: 2020-05-12 23:33 UTC (History)
2 users (show)

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


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Description GLSAMaker/CVETool Bot gentoo-dev 2020-04-11 22:17:07 UTC
CVE-2020-7039 (
  tcp_emu in tcp_subr.c in libslirp 4.1.0, as used in QEMU 4.2.0, mismanages
  memory, as demonstrated by IRC DCC commands in EMU_IRC. This can cause a
  heap-based buffer overflow or other out-of-bounds access which can lead to a
  DoS or potential execute arbitrary code.
Comment 1 Yury German Gentoo Infrastructure gentoo-dev Security 2020-04-11 22:19:03 UTC
This is probably already fixed, but wanted to file to make sure that we put a fix in place. 

Maintainers please confirm.
Comment 2 Matthias Maier gentoo-dev 2020-04-18 20:16:05 UTC
commit 91b9bba62a5dd73e32bd43434bdaebf8914579ff
Author: Matthias Maier <>
Date:   Fri Mar 13 13:21:03 2020 -0500

    app-emulation/qemu: update slirp to current master
    Package-Manager: Portage-2.3.93, Repoman-2.3.20
    Signed-off-by: Matthias Maier <>
Comment 3 Sam James (sec padawan) 2020-04-19 08:23:34 UTC
@maintainer(s), please advise if ready for stabilisation, or call yourself.
Comment 4 Sam James (sec padawan) 2020-04-19 08:27:26 UTC
(In reply to Sam James (sec padawan) from comment #3)
> @maintainer(s), please advise if ready for stabilisation, or call yourself.

Ignore this!
Comment 5 GLSAMaker/CVETool Bot gentoo-dev 2020-05-12 23:33:46 UTC
This issue was resolved and addressed in
 GLSA 202005-02 at
by GLSA coordinator Thomas Deutschmann (whissi).