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CVE-2026-9639

Authenticated Denial of Service via Malicious Backup Tarball in LXD

Published: Jun 26, 2026Updated: Jul 2, 2026 Sources: CVE List NVDCWE-476
6.5MEDIUM
NVD MITRE
EPSS Score
0.4%
Top 65.3%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:NI:NA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:NIntegrity
None
A:HAvailability
High
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Weaknesses

CWE-476

Affected Products

Canonical
commercial·GBaka canonical ltd.
LXDOn-prem
Operating Systems / linux-distro
and 1 more affected products View all →

Exploitability

Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Impact
Initial Access
View detailed technique mapping

References

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

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