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CVE-2024-36891

5.5 · MEDIUM
Published May 30, 2024 linux CWE-476 EPSS 0.23% (13th pctl)

Overview

CVE-2024-36891 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 2024 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

In the Linux kernel, the following vulnerability has been resolved:

maple_tree: fix mas_empty_area_rev() null pointer dereference

Currently the code calls mas_start() followed by mas_data_end() if the

maple state is MA_START, but mas_start() may return with the maple state

node == NULL. This will lead to a null pointer dereference when checking

information in the NULL node, which is done in mas_data_end().

Avoid setting the offset if there is no node by waiting until after the

maple state is checked for an empty or single entry state.

A user could trigger the events to cause a kernel oops by unmapping all

vmas to produce an empty maple tree, then mapping a vma that would cause

the scenario described above.

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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 linux_kernel >= 6.1, < 6.6.31 Affected

References

Ref git.kernel.org/stable/c/6c9c7c1e63b198a8b979ad963eb21410f10ccb00 Ref git.kernel.org/stable/c/883e5d542bbdddbddeba60250cb482baf3ae2415 Ref git.kernel.org/stable/c/955a923d2809803980ff574270f81510112be9cf Ref git.kernel.org/stable/c/f3956791cf526540addd3295e4c1e0f0442486cc Ref git.kernel.org/stable/c/6c9c7c1e63b198a8b979ad963eb21410f10ccb00 Ref git.kernel.org/stable/c/883e5d542bbdddbddeba60250cb482baf3ae2415 Ref git.kernel.org/stable/c/955a923d2809803980ff574270f81510112be9cf Ref git.kernel.org/stable/c/f3956791cf526540addd3295e4c1e0f0442486cc

Frequently Asked Questions

What is CVE-2024-36891?

CVE-2024-36891 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 30, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-36891?

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-2024-36891?

Check the references section for vendor advisories and patches from linux. Update linux_kernel 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-2024-36891?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-36891 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

Autonomous Discovery

AI agents map your attack surface to find vulnerabilities like this one.
Continuous Pentesting

Automated penetration testing that runs continuously, not just quarterly.
Code Review

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HackBrowser

Browser-based exploitation validates findings with real proof-of-concept.

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