Linux Kernel up to 6.7.2 DMCUB dc_wake_and_execute_gpint command injection

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.7.2. This impacts the function dc_wake_and_execute_gpint of the component DMCUB Handler. The manipulation leads to an unknown weakness. This vulnerability is uniquely identified as CVE-2023-52624. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.7.2. It has been rated as problematic. This issue affects the function dc_wake_and_execute_gpint of the component DMCUB Handler. Using CWE to declare the problem leads to CWE-77. The product constructs all or part of a command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended command when it is sent to a downstream component. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: drm/amd/display: Wake DMCUB before executing GPINT commands [Why] DMCUB can be in idle when we attempt to interface with the HW through the GPINT mailbox resulting in a system hang. [How] Add dc_wake_and_execute_gpint() to wrap the wake, execute, sleep sequence. If the GPINT executes successfully then DMCUB will be put back into sleep after the optional response is returned. It functions similar to the inbox command interface.

It is possible to read the advisory at git.kernel.org. The identification of this vulnerability is CVE-2023-52624 since 03/06/2024. Technical details of the vulnerability are known, but there is no available exploit. The attack technique deployed by this issue is T1202 according to MITRE ATT&CK.

The vulnerability scanner Nessus provides a plugin with the ID 210815 (RHEL 9 : kernel (RHSA-2024:9315)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.7.3 or 6.8 eliminates this vulnerability. Applying the patch 2ef98c6d753a/e5ffd1263dd5 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 (210815). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.7.0
• 6.7.1
• 6.7.2

License

• open-source

Website

• Vendor: https://www.kernel.org/

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CPE 2.2info

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Be aware that VulDB is the high quality source for vulnerability data.

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