Linux Kernel up to 6.10-rc3 pci1xxxx gp_aux_bus_probe double free

Summaryinfo

A vulnerability classified as problematic has been found in Linux Kernel up to 6.10-rc3. This impacts the function gp_aux_bus_probe of the component pci1xxxx. Performing a manipulation results in double free. This vulnerability is reported as CVE-2024-36973. No exploit exists. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in Linux Kernel up to 6.10-rc3. It has been classified as problematic. This affects the function gp_aux_bus_probe of the component pci1xxxx. The manipulation with an unknown input leads to a double free vulnerability. CWE is classifying the issue as CWE-415. The product calls free() twice on the same memory address, potentially leading to modification of unexpected memory locations. The impact remains unknown. The summary by CVE is:

In the Linux kernel, the following vulnerability has been resolved: misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe() When auxiliary_device_add() returns error and then calls auxiliary_device_uninit(), callback function gp_auxiliary_device_release() calls ida_free() and kfree(aux_device_wrapper) to free memory. We should't call them again in the error handling path. Fix this by skipping the redundant cleanup functions.

It is possible to read the advisory at git.kernel.org. This vulnerability is uniquely identified as CVE-2024-36973 since 05/30/2024. Technical details of the vulnerability are known, but there is no available exploit. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 01/11/2025).

The vulnerability scanner Nessus provides a plugin with the ID 213470 (Debian dla-4008 : linux-config-6.1 - security update), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 6.10-rc4 eliminates this vulnerability. Applying the patch 086c6cbcc563 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 (213470). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Type

• Operating System

Vendor

• Linux

Name

• Kernel

Version

• 6.10-rc1
• 6.10-rc2
• 6.10-rc3

License

• open-source

Website

• Vendor: https://www.kernel.org/

CPE 2.3info

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Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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