CVE-2026-9639

Severity CVSS v4.0:

Pending analysis

Type:

CWE-476 NULL Pointer Dereference

Publication date:

26/06/2026

Last modified:

02/07/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS v3.1 Severity and Metrics:

Base Score: 6.50 MEDIUM
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): Low
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): None
Integrity (I): None
Availability (A): High

Base Score 3.x

6.50

Severity 3.x

MEDIUM

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:canonical:lxd::::::::	5.0.0 (including)	5.21.5 (excluding)
cpe:2.3:a:canonical:lxd::::::::	6.0 (including)	6.9 (excluding)
cpe:2.3:o:linux:linux_kernel:-:::::::*

To consult the complete list of CPE names with products and versions, see this page

CVE-2026-9639

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools