CVE-2020-12430

Name	CVE-2020-12430
Description	An issue was discovered in qemuDomainGetStatsIOThread in qemu/qemu_driver.c in libvirt 4.10.0 though 6.x before 6.1.0. A memory leak was found in the virDomainListGetStats libvirt API that is responsible for retrieving domain statistics when managing QEMU guests. This flaw allows unprivileged users with a read-only connection to cause a memory leak in the domstats command, resulting in a potential denial of service.
Source	CVE (at NVD; CERT, LWN, oss-sec, fulldisc, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-3778-1
Debian Bugs	959447

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
libvirt (PTS)	buster	5.0.0-4+deb10u1	vulnerable
	buster (security)	5.0.0-4+deb10u2	fixed
	bullseye	7.0.0-3+deb11u2	fixed
	bookworm	9.0.0-4	fixed
	trixie	10.0.0-2	fixed
	sid	10.2.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
libvirt	source	experimental	6.2.0-1
libvirt	source	jessie	(not affected)
libvirt	source	stretch	(not affected)
libvirt	source	buster	5.0.0-4+deb10u2		DLA-3778-1
libvirt	source	(unstable)	6.4.0-2	low		959447

Notes

[stretch] - libvirt <not-affected> (Vulnerable code introduced later)
[jessie] - libvirt <not-affected> (Vulnerable code introduced later)
Fixed by: https://libvirt.org/git/?p=libvirt.git;a=commit;h=9bf9e0ae6af38c806f4672ca7b12a6b38d5a9581 (v6.1.0-rc1)
Introduced in: https://libvirt.org/git/?p=libvirt.git;a=commit;h=d1eac92784573559b6fd56836e33b215c89308e3 (v4.10.0-rc1)
https://bugzilla.redhat.com/show_bug.cgi?id=1804548
https://bugzilla.redhat.com/show_bug.cgi?id=1828190