---
cve: "CVE-2026-9639"
severity: "MEDIUM"
cvss: 6.5
epss: "42%"
vendor: "Canonical"
kev: false
exploited: false
published: "2026-06-26 16:16:37"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-07T00:35:29+02:00"
---

# CVE-2026-9639

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- c5184be310b13a8be5d9a5f286bfa1c0c286716e (Commit)
- 85f897013ccdb0f8f44d434a3b655d2edcefcfae (Commit)

## Referenzen

- <https://github.com/canonical/lxd/security/advisories/GHSA-j93m-3j9p-m5m8>
- <https://github.com/canonical/lxd/pull/18320>
- <https://github.com/canonical/lxd/pull/18390>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-9639) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_