CVE-2026-41648

NameCVE-2026-41648
DescriptionIncus is a system container and virtual machine manager. Prior to version 7.0.0, user provided image and backup tarballs would be unpacked and YAML files parsed without any size restrictions. This was making it easy for an authenticated user to provide a crafted image or backup tarball that when parsed by Incus would lead to a very large YAML document being loaded into memory, potentially causing the entire server to run out of memory. This issue has been patched in version 7.0.0.
SourceCVE (at NVD; CERT, ENISA, LWN, oss-sec, fulldisc, Debian ELTS, Red Hat, Ubuntu, Gentoo, SUSE bugzilla/CVE, GitHub advisories/code/issues, web search, more)
ReferencesDSA-6244-1, DSA-6247-1
Debian Bugs1135644

Vulnerable and fixed packages

The table below lists information on source packages.

Source PackageReleaseVersionStatus
incus (PTS)trixie (security), trixie6.0.4-2+deb13u7fixed
forky, sid7.0.0-1fixed
lxd (PTS)bookworm, bookworm (security)5.0.2-5+deb12u6fixed
trixie (security), trixie5.0.2+git20231211.1364ae4-9+deb13u6fixed

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

PackageTypeReleaseFixed VersionUrgencyOriginDebian Bugs
incussourcetrixie6.0.4-2+deb13u7DSA-6244-1
incussource(unstable)7.0.0-11135644
lxdsourcebookworm5.0.2-5+deb12u6DSA-6247-1
lxdsourcetrixie5.0.2+git20231211.1364ae4-9+deb13u6DSA-6247-1
lxdsource(unstable)(unfixed)

Notes

https://github.com/lxc/incus/security/advisories/GHSA-67wx-r9xr-x75x
https://github.com/lxc/incus/pull/3273

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