CVE-2026-57965

Name	CVE-2026-57965
Description	A flaw was found in spice-vdagent. A malicious or compromised SPICE host can trigger an integer overflow by sending a specially crafted message. This vulnerability can lead to a heap buffer overflow, causing the spice-vdagent daemon to crash and resulting in a Denial of Service (DoS) for the virtual machine. This issue requires the SPICE host to be untrusted or compromised for exploitation.
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)

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	vulnerable
	bookworm	0.22.1-3	vulnerable
	trixie	0.22.1-4.1	vulnerable
	forky, sid	0.23.0-2	vulnerable

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
spice-vdagent	source	(unstable)	(unfixed)

https://bugzilla.redhat.com/show_bug.cgi?id=2493581