CVE-2026-63299 — Storage volume cross-project move and snapshot restore bypass project disk limits

Description (CNA)

An authorization bypass vulnerability in LXD allows an authenticated user to bypass project-level disk and volume limits. Two related code paths fail to verify resource limits during volume operations: the storagePoolVolumeTypePostMove function omits the limits.AllowVolumeCreation check before moving a volume across projects, and volume snapshot restore operations skip the AllowVolumeUpdate check when the configuration is nil (Config == nil). An attacker can exploit these flaws to allocate storage resources that exceed the administrative limits configured for a project.

Affected (CNA)

Vendor / product	Versions
Canonical / LXD	affected 5.0.0 before 5.0.8; affected 5.21.0 before 5.21.6; affected 6.0 before 6.10

CWE

CWE-770

References

https://github.com/canonical/lxd/security/advisories/GHSA-5h78-p252-989h

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.