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Bug 711524 (CVE-2019-20485) - <app-emulation/libvirt-6.0.0: potential DoS by holding a monitor job while querying QEMU guest-agent (CVE-2019-20485)
Summary: <app-emulation/libvirt-6.0.0: potential DoS by holding a monitor job while qu...
Alias: CVE-2019-20485
Product: Gentoo Security
Classification: Unclassified
Component: Vulnerabilities (show other bugs)
Hardware: All Linux
: Normal minor (vote)
Assignee: Gentoo Security
Whiteboard: B3 [noglsa cve]
: 713334 (view as bug list)
Depends on:
Blocks: 713334
  Show dependency tree
Reported: 2020-03-04 16:07 UTC by Agostino Sarubbo
Modified: 2020-05-06 22:24 UTC (History)
3 users (show)

See Also:
Package list:
app-emulation/libvirt-6.0.0-r1 dev-python/libvirt-python-6.0.0
Runtime testing required: ---
nattka: sanity-check-


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Description Agostino Sarubbo gentoo-dev 2020-03-04 16:07:49 UTC
From :
A flaw was found in the way Libvirtd daemon issued the 'suspend' command to a
QEMU guest-agent running inside a guest. It holds a monitor job while issuing
the 'suspend' command to a guest-agent. A malicious guest-agent may use this
flaw to block the Libvirt daemon indefinitely resulting in a DoS scenario.

Upstream patch:

@maintainer(s): after the bump, in case we need to stabilize the package, please let us know if it is ready for the stabilization or not.
Comment 1 Matthias Maier gentoo-dev 2020-03-13 16:57:23 UTC
Arches, please stabilize libvirt 6.0.0-r1
Comment 2 Agostino Sarubbo gentoo-dev 2020-03-14 19:46:59 UTC
amd64 stable
Comment 3 Agostino Sarubbo gentoo-dev 2020-03-15 18:43:40 UTC
x86 stable.

Maintainer(s), please cleanup.
Security, please vote.
Comment 4 Sam James archtester Gentoo Infrastructure gentoo-dev Security 2020-03-19 03:37:26 UTC
*** Bug 713334 has been marked as a duplicate of this bug. ***
Comment 5 Matthias Maier gentoo-dev 2020-03-19 03:39:56 UTC
commit a555f5f3ce98327315d3c8fac20239b510a1a281 (HEAD -> master, origin/master, origin/HEAD)
Author: Matthias Maier <>
Date:   Wed Mar 18 22:37:13 2020 -0500

    app-emulation/libvirt: drop old, bug #711524
    Package-Manager: Portage-2.3.94, Repoman-2.3.21
    Signed-off-by: Matthias Maier <>
Comment 6 NATTkA bot gentoo-dev 2020-04-06 11:21:28 UTC
Unable to check for sanity:

> no match for package: app-emulation/libvirt-6.0.0-r1
Comment 7 Matthias Maier gentoo-dev 2020-04-18 19:10:13 UTC
@security: Please vote.