CVE-2026-85185
CVE.org · Published
- Record status
- Published
- Identifier year (not publication year)
- 2026
- Source publication
- Source updated
- Imported by cveboard
- Source snapshot
- cve_2026-10-24_midnight_baseline ·
CNA source text (English)
Path traversal in LXD btrfs storage driver allows arbitrary file deletion and write on host as root
Path traversal in the btrfs storage driver in Canonical LXD versions 4.0.2 and later (fixed in 4.0.14, 5.0.10, 5.21.8 and 6.10) on Linux allows an authenticated client with permission to create instances in a project to delete arbitrary files on the host as root. On hosts whose root filesystem is btrfs, the client can also place attacker-controlled content at arbitrary host paths, leading to full host compromise. The client does this with a crafted subvolume path containing ../ sequences, sent in either of two ways: in the optimized_header.yaml of an optimized btrfs backup, or in the btrfs migration header sent by a malicious migration source.
Scoped product and version facts
Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.
Exploitation unknown; this catalogue does not assess exploitation.
LXD
- Vendor
- Canonical
- Product
- LXD
- Platforms
- Linux
- Default status
unaffected- Package
- LXD
| Version (version) | Status (status) | Version scheme (versionType) | Exclusive end (lessThan) | Inclusive end (lessThanOrEqual) | Status changes (at → status) |
|---|---|---|---|---|---|
| 4.0.2 | affected | semver | 4.0.14 | Unavailable | None listed |
| 5.0.0 | affected | semver | 5.0.10 | Unavailable | None listed |
| 5.21.0 | affected | semver | 5.21.8 | Unavailable | None listed |
| 6.0 | affected | semver | 6.10 | Unavailable | None listed |