# CVE-2026-88264: Crun: crun: /dev/console symlink follow allows root-owned file creation outside the rootfs

> Attackers can create root-owned files outside the container rootfs via symlink following in /dev/console, requiring non-default container configurations.

- **Severity:** Medium 5.6 (`CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 10 Sep 2026
- **Updated:** 25 Sep 2026
- **Also known as:** AZL-101099, BELL-CVE-2026-88264, DEBIAN-CVE-2026-88264, GHSA-ppgw-cqj8-9qrg, UBUNTU-CVE-2026-88264

## What is CVE-2026-88264?

CVE-2026-88264 is a medium-severity path traversal vulnerability in Red Hat Enterprise Linux 10, published on 10 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A flaw was found in crun. When the container configuration does not give /dev a dedicated mount, terminal setup can redirect /dev/console onto an attacker-controlled path, including via the read-only-rootfs bind-mount fallback. Affected versions are crun 1.29.1 and earlier. Default configurations that mount a fresh /dev are not exposed. No fixed release is available yet.

Weakness: CWE-59 (Improper Link Resolution Before File Access)

## Which versions are affected by CVE-2026-88264?


## How do I fix CVE-2026-88264?

No fix published yet.

## Is CVE-2026-88264 being exploited?

There is no known exploitation of CVE-2026-88264 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-88264 and fix it if it is affected.

What it is: CVE-2026-88264 is a medium-severity path traversal vulnerability in Red Hat Enterprise Linux 10, published on 10 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-88264 in the wild and no public exploit code.

Affected product: Red Hat Enterprise Linux 10. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-88264/ (Markdown: https://insights.sbomify.com/CVE-2026-88264/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-88264
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-88264
- OSV: https://osv.dev/vulnerability/CVE-2026-88264

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-88264/
Summaries are generated and may contain mistakes; the official description above is the record.