CVE-2020-25653

Name	CVE-2020-25653
Description	A race condition vulnerability was found in the way the spice-vdagentd daemon handled new client connections. This flaw may allow an unprivileged local guest user to become the active agent for spice-vdagentd, possibly resulting in a denial of service or information leakage from the host. The highest threat from this vulnerability is to data confidentiality as well as system availability. This flaw affects spice-vdagent versions 0.20 and prior.
Source	CVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
References	DLA-2524-1
Debian Bugs	973769

Vulnerable and fixed packages

The table below lists information on source packages.

Source Package	Release	Version	Status
spice-vdagent (PTS)	bullseye	0.20.0-2	fixed
	bookworm	0.22.1-3	fixed
	trixie	0.22.1-4.1	fixed
	forky, sid	0.23.0-1	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
spice-vdagent	source	stretch	0.17.0-1+deb9u1		DLA-2524-1
spice-vdagent	source	(unstable)	0.20.0-2			973769

Notes

[buster] - spice-vdagent <no-dsa> (Minor issue)
https://www.openwall.com/lists/oss-security/2020/11/04/1
https://gitlab.freedesktop.org/spice/linux/vd_agent/-/commit/51c415df82a52e9ec033225783c77df95f387891
https://gitlab.freedesktop.org/spice/linux/vd_agent/-/commit/5c50131797e985d0a5654c1fd7000ae945ed29a7