CVEvulnerability

CVE-2026-85526

9.9 CRITICAL Published 2026-09-28 Modified 2026-09-29 Official page ↗
Status
Deferred
Published
2026-09-28
Last modified
2026-09-29
Assigner
[email protected]
CVSS 3.1 ([email protected])
9.9 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Weaknesses
CWE-22

Description

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.

Related

Weakness · CWE (1)

  • CWE-22 Improper Limitation of a Pathname to a Restricted Directory weakness

References