CVE-2026-85526
CRITICAL
NVD
CVSS Score
9.9
Severity
CRITICAL
Published
Sep 28, 2026
Vendor
unknown
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.