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CVE-2024-26943

5.5 · MEDIUM
Published May 1, 2024 linux CWE-476 EPSS 0.22% (13th pctl)

Overview

CVE-2024-26943 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 1, 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:

nouveau/dmem: handle kcalloc() allocation failure

The kcalloc() in nouveau_dmem_evict_chunk() will return null if

the physical memory has run out. As a result, if we dereference

src_pfns, dst_pfns or dma_addrs, the null pointer dereference bugs

will happen.

Moreover, the GPU is going away. If the kcalloc() fails, we could not

evict all pages mapping a chunk. So this patch adds a __GFP_NOFAIL

flag in kcalloc().

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

this patch switches 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 >= 6.1, < 6.1.84 Affected

References

Ref git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567b Ref git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4d Ref git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee Ref git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2 Ref git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2 Ref git.kernel.org/stable/c/16e87fe23d4af6df920406494ced5c0f4354567b Ref git.kernel.org/stable/c/2a84744a037b8a511d6a9055f3defddc28ff4a4d Ref git.kernel.org/stable/c/3e82f7383e0b82a835e6b6b06a348b2bc4e2c2ee Ref git.kernel.org/stable/c/5e81773757a95fc298e96cfd6d4700f07b6192a2 Ref git.kernel.org/stable/c/9acfd8b083a0ffbd387566800d89f55058a68af2

Frequently Asked Questions

What is CVE-2024-26943?

CVE-2024-26943 is a medium-severity vulnerability affecting linux linux_kernel. It was published on May 1, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-26943?

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-2024-26943?

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-2024-26943?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-26943 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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