GHSA-G5P6-327M-3FXX

Talos Linux ships runc vulnerable to the escape to the host attack

Workarounds

Inspect the workloads running on the cluster to make sure they are not trying to exploit the vulnerability.

References

• CVE-2024-21626
• Vulnerability: runc process.cwd and leaked fds container breakout

Snyk has discovered a vulnerability in all versions of runc <=1.1.11, as used by the Docker engine, along with other containerization technologies such as Kubernetes. Exploitation of this issue can result in container escape to the underlying host OS, either through executing a malicious image or building an image using a malicious Dockerfile or upstream image (i.e., when using FROM). This issue has been assigned the CVE-2024-21626.

GHSA-G5P6-327M-3FXX has a CVSS score of 8.6 (High). The vector is requires local access, no privileges required, and user interaction required. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (1.6.4, 1.5.6); upgrading removes the vulnerable code path.

Kodem intelligence

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runc runtime was updated to 1.1.12 in Talos v1.5.6 and v1.6.4.

1. What is GHSA-G5P6-327M-3FXX? GHSA-G5P6-327M-3FXX is a high-severity security vulnerability in github.com/siderolabs/talos (go), affecting versions >= 1.6.0, < 1.6.4. It is fixed in 1.6.4, 1.5.6.
2. How severe is GHSA-G5P6-327M-3FXX? GHSA-G5P6-327M-3FXX has a CVSS score of 8.6 (High). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of github.com/siderolabs/talos are affected by GHSA-G5P6-327M-3FXX? github.com/siderolabs/talos (go) versions >= 1.6.0, < 1.6.4 is affected.
4. Is there a fix for GHSA-G5P6-327M-3FXX? Yes. GHSA-G5P6-327M-3FXX is fixed in 1.6.4, 1.5.6. Upgrade to this version or later.
5. Is GHSA-G5P6-327M-3FXX exploitable, and should I be worried? Whether GHSA-G5P6-327M-3FXX is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether GHSA-G5P6-327M-3FXX is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix GHSA-G5P6-327M-3FXX?
   • Upgrade github.com/siderolabs/talos to 1.6.4 or later
   • Upgrade github.com/siderolabs/talos to 1.5.6 or later

Other vulnerabilities in github.com/siderolabs/talos