CVE-2026-33743

Name	CVE-2026-33743
Description	Incus is a system container and virtual machine manager. Prior to version 6.23.0, a specially crafted storage bucket backup can be used by an user with access to Incus' storage bucket feature to crash the Incus daemon. Repeated use of this attack can be used to keep the server offline causing a denial of service of the control plane API. This does not impact any running workload, existing containers and virtual machines will keep operating. Version 6.23.0 fixes the issue.
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
incus (PTS)	trixie (security), trixie	6.0.4-2+deb13u4	vulnerable
	forky	6.0.6-1	vulnerable
	sid	6.0.6-2	fixed
lxd (PTS)	bookworm	5.0.2-5+deb12u2	fixed
	bookworm (security)	5.0.2-5+deb12u3	fixed
	trixie (security), trixie	5.0.2+git20231211.1364ae4-9+deb13u3	fixed

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

Package	Type	Release	Fixed Version	Urgency	Origin	Debian Bugs
incus	source	(unstable)	6.0.6-2
lxd	source	(unstable)	(not affected)

Notes

- lxd <not-affected> (Vulnerable code not present)
https://github.com/lxc/incus/pull/3092
https://github.com/lxc/incus/security/advisories/GHSA-vg76-xmhg-j5x3