Vulnerability · Published May 7, 2026 · Assigned by GitHub_M
CVE-2026-41685Incus: Unbounded binary import disk exhaustion
Medium 4.3
In plain English
A medium-severity resource allocation without limits in incus from lxc. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 27% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Incus is a system container and virtual machine manager. Prior to version 7.0.0, uploads of large amount of data by authenticated users can run the Incus server out of disk space, potentially taking down the host system. The impact here is limited for anyone using storage.images_volume and storage.backups_volume as those users will have large uploads be stored on those volumes rather than directly on the host filesystem. This is the default behavior on IncusOS. This issue has been patched in version 7.0.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine:v3.24 | incus | 7.0.0-r0 | ALPINE-CVE-2026-41685 |
| Debian:13 | incus | 6.0.4-2+deb13u7 | DEBIAN-CVE-2026-41685 |
| Debian:14 | incus | 7.0.0-1 | DEBIAN-CVE-2026-41685 |
| Debian:12 | lxd | no fix listed | DEBIAN-CVE-2026-41685 |
| Debian:13 | lxd | 5.0.2+git20231211.1364ae4-9+deb13u6 | DEBIAN-CVE-2026-41685 |
| Go | github.com/lxc/incus | no fix listed | GO-2026-5280 |
| Go | github.com/lxc/incus/v6 | no fix listed | GO-2026-5280 |
| Go | github.com/lxc/incus/v6/cmd/incusd | no fix listed | GHSA-98vh-x9cx-9cfp |
| Ubuntu:25.10 | incus | no fix listed | UBUNTU-CVE-2026-41685 |
| Ubuntu:26.10 | incus | no fix listed | UBUNTU-CVE-2026-41685 |
Affected products (as reported)
Weakness: CWE-770 · Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L
References
- https://github.com/lxc/incus/security/advisories/GHSA-98vh-x9cx-9cfp x_refsource_CONFIRM
- https://github.com/lxc/incus/releases/tag/v7.0.0 x_refsource_MISC