# CVE-2026-33945: incus: Incus is a system container and virtual machine manager

CVE-2026-33945 is fixed in 10 products on 1 platform, first by DEBIAN-CVE-2026-33945, released March 27, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-33945
- Priority: Urgent
- CVSS: 9.6 (critical)
- EPSS: 0.0046
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Mar 27, 2026

## Description

Incus is a system container and virtual machine manager. Incus instances have an option to provide credentials to systemd in the guest. For containers, this is handled through a shared directory. Prior to version 6.23.0, an attacker can set a configuration key named something like `systemd.credential.../../../../../../root/.bashrc` to cause Incus to write outside of the `credentials` directory associated with the container. This makes use of the fact that the Incus syntax for such credentials is `systemd.credential.XYZ` where `XYZ` can itself contain more periods. While it's not possible to read any data this way, it's possible to write to arbitrary files as root, enabling both privilege escalation and denial of service attacks. Version 6.23.0 fixes the issue.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | govulncheck-vulndb opensuse-leap 16.0 | 0.0.20260723T184607-160000.1.1 | [OPENSUSE-SU-2026:21483-1](https://patchblox.com/security/data/fix/linux/opensuse-su-2026-21483-1.md) | Jul 30, 2026 |
| Linux | incus Debian 14 | 6.0.6-2 | [DEBIAN-CVE-2026-33945](https://patchblox.com/security/data/fix/linux/debian-cve-2026-33945.md) | Mar 27, 2026 |
| Linux | incus Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-agent Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-agent-debuginfo Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-client Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-client-debuginfo Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-debuginfo Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-debugsource Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-tools Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 2026 |
| Linux | incus-tools-debuginfo Fedora 43 | 6.23-3.fc43 | [FEDORA-2026-094B7621CF](https://patchblox.com/security/data/fix/linux/fedora-2026-094b7621cf.md) | Apr 10, 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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