Linux Kernel up to 6.8.9 ice memdup_user_nul null termination

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.8.9. Affected by this issue is the function memdup_user_nul of the component ice. Performing a manipulation results in null termination. This vulnerability is known as CVE-2024-36935. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.8.9. It has been classified as problematic. This affects the function memdup_user_nul of the component ice. The manipulation with an unknown input leads to a null termination vulnerability. CWE is classifying the issue as CWE-170. The product does not terminate or incorrectly terminates a string or array with a null character or equivalent terminator. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: ice: ensure the copied buf is NUL terminated Currently, we allocate a count-sized kernel buffer and copy count bytes from userspace to that buffer. Later, we use sscanf on this buffer but we don't ensure that the string is terminated inside the buffer, this can lead to OOB read when using sscanf. Fix this issue by using memdup_user_nul instead of memdup_user.

The advisory is shared at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-36935 since 05/30/2024. Technical details are known, but no exploit is available. The price for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/18/2025).

The vulnerability scanner Nessus provides a plugin with the ID 249878 (Linux Distros Unpatched Vulnerability : CVE-2024-36935), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.8.10 eliminates this vulnerability. Applying the patch 5ff4de981983/666854ea9cad 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 vulnerability database at Tenable (249878). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.8.0
• 6.8.1
• 6.8.2
• 6.8.3
• 6.8.4
• 6.8.5
• 6.8.6
• 6.8.7
• 6.8.8
• 6.8.9

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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CPE 2.2info

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If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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