CVE-2020-14339

Name	CVE-2020-14339
Description	A flaw was found in libvirt, where it leaked a file descriptor for `/dev/mapper/control` into the QEMU process. This file descriptor allows for privileged operations to happen against the device-mapper on the host. This flaw allows a malicious guest user or process to perform operations outside of their standard permissions, potentially causing serious damage to the host operating system. The highest threat from this vulnerability is to confidentiality, integrity, as well as system availability.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
Debian Bugs	966563

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libvirt (PTS)	bullseye	7.0.0-3+deb11u3	fixed
	bookworm	9.0.0-4+deb12u2	fixed
	trixie	10.10.0-3	fixed
	sid	10.10.0-4	fixed

The information below is based on the following data on fixed versions.

Package	Type	Release	Fixed Version	Debian Bugs
libvirt	source	stretch	(not affected)
libvirt	source	buster	(not affected)
libvirt	source	(unstable)	6.6.0-1	966563

Notes

[buster] - libvirt <not-affected> (Vulnerable code introduced later)
[stretch] - libvirt <not-affected> (Vulnerable code introduced later)
https://bugzilla.redhat.com/show_bug.cgi?id=1860069
https://www.redhat.com/archives/libvir-list/2020-July/msg01500.html
Proposed patch: https://www.redhat.com/archives/libvir-list/2020-July/msg01501.html
https://libvirt.org/git/?p=libvirt.git;a=commit;h=22494556542c676d1b9e7f1c1f2ea13ac17e1e3e (v6.6.0)