CVE-2024-36973: linux kernel Double Free — Fix

Description

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.

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CVSS v3.1 Score

7.8

HIGH

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness Type (CWE)

CWE-415 CWE-415

Affected Products

Vendor	Product	Versions
linux	linux_kernel	6.1 — 6.1.95
linux	linux_kernel	6.2 — 6.6.35
linux	linux_kernel	6.7 — 6.9.6
linux	linux_kernel	All
linux	linux_kernel	All
linux	linux_kernel	All

References

Advisories & Patches

https://git.kernel.org/stable/c/086c6cbcc563c81d55257f9b27e14faf1d0963d3 https://git.kernel.org/stable/c/1efe551982297924d05a367aa2b6ec3d275d5742 https://git.kernel.org/stable/c/34ae447b138680b5ed3660f7d935ff3faf88ba1a https://git.kernel.org/stable/c/86c9713602f786f441630c4ee02891987f8618b9 https://git.kernel.org/stable/c/086c6cbcc563c81d55257f9b27e14faf1d0963d3 https://git.kernel.org/stable/c/1efe551982297924d05a367aa2b6ec3d275d5742 https://git.kernel.org/stable/c/34ae447b138680b5ed3660f7d935ff3faf88ba1a https://git.kernel.org/stable/c/86c9713602f786f441630c4ee02891987f8618b9

Other References

https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-36973? +

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 has a CVSS v3.1 base score of 7.8 (HIGH).

How severe is CVE-2024-36973? +

CVE-2024-36973 has a CVSS v3.1 score of 7.8 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.

What products are affected by CVE-2024-36973? +

CVE-2024-36973 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2024-36973? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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