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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| lxc | incus | < 6.23.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | incus | 6.0.6-2 | — |
| Debian 13 | incus | 6.0.4-2+deb13u5 | DSA-6184-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | incus | No fix yet | — |
| Ubuntu 25.10 | incus | No fix yet | — |
Show 2 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 26.04 LTS | incus | No fix yet | — |
| Ubuntu Pro 24.04 LTS | incus | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | incus | 6.23-1.1 | openSUSE-SU-2026:10450-1 |
| openSUSE Leap 16.0 | govulncheck-vulndb | 0.0.20260723T184607-160000.1.1 | openSUSE-SU-2026:21483-1 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| Go | github.com/lxc/incus | <= 0.7.0 | — | GHSA-vg76-xmhg-j5x3 |
| Go | github.com/lxc/incus | all versions | — | GO-2026-4886 |
| Go | github.com/lxc/incus/v6 | < 6.23.0 | 6.23.0 | GHSA-vg76-xmhg-j5x3 |
Advisories 3
- openSUSE-SU-2026:21483-1 Security update for govulncheck-vulndb SUSE / openSUSE Security Updates · Jul 31, 2026
- DSA-6184-1 incus - security update Debian Security (DSA / DLA) · Mar 29, 2026
- openSUSE-SU-2026:10450-1 incus-6.23-1.1 on GA media SUSE / openSUSE Security Updates · Mar 29, 2026