Vulnerability Description
Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage bucket feature to cause the Incus daemon to crash. The vulnerability is present in the backup metadata handling logic, where the daemon processes the index.yaml file from an imported archive and accesses members of the parsed backup configuration without first verifying that the configuration object was initialized. A malicious or malformed index.yaml that omits the config block causes a nil-pointer dereference during bucket import operations and terminates the daemon. Repeated use of this issue can be used to keep Incus offline, causing a denial of service. This issue is fixed in version 7.0.0.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Linuxcontainers | Incus | < 7.0.0 |
Related Weaknesses (CWE)
References
- https://github.com/lxc/incus/security/advisories/GHSA-gc7j-g665-rxr9ExploitVendor Advisory
- https://github.com/lxc/incus/security/advisories/GHSA-gc7j-g665-rxr9ExploitVendor Advisory
FAQ
What is CVE-2026-40195?
CVE-2026-40195 is a vulnerability with a CVSS score of 6.5 (MEDIUM). Incus is a system container and virtual machine manager. In versions before 7.0.0, missing validation logic in the storage bucket import logic allows an authenticated user with access to the storage b...
How severe is CVE-2026-40195?
CVE-2026-40195 has been rated MEDIUM with a CVSS base score of 6.5/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-40195?
Check the references section above for vendor advisories and patch information. Affected products include: Linuxcontainers Incus.