CVE-2022-4129
5.5 · MEDIUMOverview
CVE-2022-4129 is a medium-severity vulnerability affecting linux layer_2_tunneling_protocol. It was published on November 28, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
Technical Description
A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.
Remediation
Check the references section for vendor advisories and patches from linux. Update layer_2_tunneling_protocol to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
Affected Products
| Vendor | Product | Versions | Status |
|---|---|---|---|
| linux | layer_2_tunneling_protocol | >= 0, < 6.0 | Affected |
References
Frequently Asked Questions
What is CVE-2022-4129?
CVE-2022-4129 is a medium-severity vulnerability affecting linux layer_2_tunneling_protocol. It was published on November 28, 2022 and has a CVSS 3.1 base score of 5.5 (MEDIUM).
How severe is CVE-2022-4129?
This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.
How do I fix or remediate CVE-2022-4129?
Check the references section for vendor advisories and patches from linux. Update layer_2_tunneling_protocol to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.
How can CyberStrike help with CVE-2022-4129?
CyberStrike's AI-powered security agents can automatically detect CVE-2022-4129 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.
How CyberStrike Helps
AI agents map your attack surface to find vulnerabilities like this one.
Automated penetration testing that runs continuously, not just quarterly.
AI-driven PR review catches vulnerable dependencies before they ship.
Browser-based exploitation validates findings with real proof-of-concept.
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