Go to homepageCyberStrike

Menu

Star on GitHub · 3.3k
Sign inDownload

CVE-2024-35939

9.3 · CRITICAL

In the Linux kernel, the following vulnerability has been resolved: dma-direct: Leak pages on dma_set_decrypted() failure On TDX it is possible for the untrusted host to cause set_memory_encrypte…

Published May 19, 2024EPSS 0.22%

Overview

CVE-2024-35939 is a critical-severity vulnerability. It was published on May 19, 2024 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

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

dma-direct: Leak pages on dma_set_decrypted() failure

On TDX it is possible for the untrusted host to cause

set_memory_encrypted() or set_memory_decrypted() to fail such that an

error is returned and the resulting memory is shared. Callers need to

take care to handle these errors to avoid returning decrypted (shared)

memory to the page allocator, which could lead to functional or security

issues.

DMA could free decrypted/shared pages if dma_set_decrypted() fails. This

should be a rare case. Just leak the pages in this case instead of

freeing them.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. 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.

References

Refgit.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66aRefgit.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9Refgit.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934cRefgit.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcafRefgit.kernel.org/stable/c/4031b72ca747a1e6e9ae4fa729e765b43363d66aRefgit.kernel.org/stable/c/4e0cfb25d49da2e6261ad582f58ffa5b5dd8c8e9Refgit.kernel.org/stable/c/b57326c96b7bc7638aa8c44e12afa2defe0c934cRefgit.kernel.org/stable/c/b9fa16949d18e06bdf728a560f5c8af56d2bdcaf

How CyberStrike helps

Frequently asked questions

What is CVE-2024-35939?

CVE-2024-35939 is a critical-severity vulnerability. It was published on May 19, 2024 and has a CVSS 3.1 base score of 9.3 (CRITICAL).

How severe is CVE-2024-35939?

This vulnerability has a CVSS 3.1 base score of 9.3, rated CRITICAL. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-35939?

Check the references section for vendor advisories, patches, and mitigation guidance. 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-2024-35939?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-35939 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

Related CRITICAL CVEs from 2024

View all
Browse by year2026202520242023202220212020201920182017201620152014201320122011201020092008200720062005200420032002200120001999
LiveWatch live →