CVE-2026-85526 (GCVE-0-2026-85526)
Vulnerability from cvelistv5
Published
2026-09-28 13:21
Modified
2026-09-29 03:55
Severity ?
9.9 (Critical) - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
CWE
  • CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
Summary
Path traversal in the Btrfs storage driver (unpackVolume) in Canonical LXD on Linux allows an authenticated user with instance creation privileges to delete or replace arbitrary files and directories on the host filesystem as root via a crafted subvolumes[].path entry in backup/optimized_header.yaml during a btrfs optimized backup import.
References
Impacted products
Vendor Product Version
Canonical LXD Version: 4.0.0   ≤
Version: 5.0.0   ≤
Version: 5.21.0   ≤
Version: 6.0   ≤
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