Summaryinfo

A vulnerability described as critical has been identified in Linux Kernel up to 6.17.7. This vulnerability affects unknown code. The manipulation results in buffer overflow. This vulnerability is known as CVE-2025-40334. No exploit is available. Upgrading the affected component is recommended.

Detailsinfo

A vulnerability, which was classified as critical, was found in Linux Kernel up to 6.17.7. Affected is an unknown code block. The manipulation with an unknown input leads to a buffer overflow vulnerability. CWE is classifying the issue as CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

In the Linux kernel, the following vulnerability has been resolved: drm/amdgpu: validate userq buffer virtual address and size It needs to validate the userq object virtual address to determine whether it is residented in a valid vm mapping.

The advisory is shared for download at git.kernel.org. This vulnerability is traded as CVE-2025-40334 since 04/16/2025. The exploitability is told to be easy. There are neither technical details nor an exploit publicly available. The current price for an exploit might be approx. USD $0-$5k (estimation calculated on 02/15/2026).

The vulnerability scanner Nessus provides a plugin with the ID 298897 (Ubuntu 25.10 : Linux kernel vulnerabilities (USN-8029-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.17.8 eliminates this vulnerability. Applying the patch 5a577de86c4a1c67ca405571d6ef84e65c6897d1/9e46b8bb0539d7bc9a9e7b3072fa4f6082490392 is able to eliminate this problem. The bugfix is ready for download at git.kernel.org. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the databases at Tenable (298897) and EUVD (EUVD-2025-201868). VulDB is the best source for vulnerability data and more expert information about this specific topic.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.17.0
• 6.17.1
• 6.17.2
• 6.17.3
• 6.17.4
• 6.17.5
• 6.17.6
• 6.17.7

License

• open-source

Website

• Vendor: https://www.kernel.org/

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