# CVE-2026-34178: incus: In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the s...

CVE-2026-34178 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-34178, released April 9, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-34178
- Priority: Urgent
- CVSS: 9.1 (critical)
- EPSS: 0.0043
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Apr 9, 2026

## Description

In Canonical LXD before 6.8, the backup import path validates project restrictions against backup/index.yaml in the supplied tar archive but creates the instance from backup/container/backup.yaml, a separate file in the same archive that is never checked against project restrictions. An authenticated remote attacker with instance-creation permission in a restricted project can craft a backup archive where backup.yaml carries restricted settings such as security.privileged=true or raw.lxc directives, bypassing all project restriction enforcement and allowing full host compromise.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260827T195228-160000.1.1 | [OPENSUSE-SU-2026:21761-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21761-1.md) | Sep 4, 2026 |
| Linux | govulncheck-vulndb sles 16.0 | 0.0.20260827T195228-160000.1.1 | [SUSE-SU-2026:23625-1](https://patchblox.com/security/data/fix/linux/suse-su-2026-23625-1.md) | Sep 4, 2026 |
| Linux | incus Debian 13.5 (trixie) | 6.0.4-2+deb13u6 | [DEBIAN-CVE-2026-34178](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34178.md) | Apr 9, 2026 |
| Linux | incus Debian 14 | 6.0.6-3 | [DEBIAN-CVE-2026-34178](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34178.md) | Apr 9, 2026 |
| Linux | lxd Debian 13.5 (trixie) | 5.0.2+git20231211.1364ae4-9+deb13u5 | [DEBIAN-CVE-2026-34178](https://patchblox.com/security/data/fix/linux/debian-cve-2026-34178.md) | Apr 9, 2026 |

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Data as of 2026-11-08T06:59:42Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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