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CVE-2024-38543

5.5 · MEDIUM
Published Jun 19, 2024 linux CWE-476 EPSS 0.24% (15th pctl)

Overview

CVE-2024-38543 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 19, 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:

lib/test_hmm.c: handle src_pfns and dst_pfns allocation failure

The kcalloc() in dmirror_device_evict_chunk() will return null if the

physical memory has run out. As a result, if src_pfns or dst_pfns is

dereferenced, the null pointer dereference bug will happen.

Moreover, the device is going away. If the kcalloc() fails, the pages

mapping a chunk could not be evicted. So add a __GFP_NOFAIL flag in

kcalloc().

Finally, as there is no need to have physically contiguous memory, Switch

kcalloc() to kvcalloc() in order to avoid failing allocations.

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 >= 5.8, < 6.1.93 Affected

References

Ref git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64 Ref git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc Ref git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33 Ref git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3 Ref git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7 Ref git.kernel.org/stable/c/1a21fdeea502658e315bd939409b755974f4fb64 Ref git.kernel.org/stable/c/3b20d18f475bd17309db640dbe7d7c7ebb5bc2bc Ref git.kernel.org/stable/c/65e528a69cb3ed4a286c45b4afba57461c8b5b33 Ref git.kernel.org/stable/c/c2af060d1c18beaec56351cf9c9bcbbc5af341a3 Ref git.kernel.org/stable/c/ce47e8ead9a72834cc68431d53f8092ce69bebb7

Frequently Asked Questions

What is CVE-2024-38543?

CVE-2024-38543 is a medium-severity vulnerability affecting linux linux_kernel. It was published on June 19, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-38543?

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-2024-38543?

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-2024-38543?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-38543 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

AI-driven PR review catches vulnerable dependencies before they ship.
HackBrowser

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

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