CVE-2026-9639
Authenticated Denial of Service via Malicious Backup Tarball in LXD
Description
Nil-pointer dereference in CreateCustomVolumeFromBackup in LXD up to version 6.8 and 5.21 on Linux allows an authenticated user with can_create_storage_volumes permissions to cause a denial of service via a specially crafted custom-volume backup tarball that omits the expires_at snapshot field.
INFO
Published Date :
June 26, 2026, 3:39 p.m.
Last Modified :
June 26, 2026, 3:39 p.m.
Remotely Exploit :
Yes !
Source :
canonical
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | cc1ad9ee-3454-478d-9317-d3e869d708bc | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update LXD to a version later than 6.8 or 5.21.
- Validate backup tarball integrity before creating volumes.
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CVE-2026-9639 vulnerability anywhere in the article.