What’s Vulnerable › Vulnerabilities

CVE-2024-36973: misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe()

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-06-17 · updated 2026-08-04
• Weakness: CWE-415

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.

Affected products

• Linux kernel: from 6.1 before 6.1.95; from 6.2 before 6.6.35; from 6.7 before 6.9.6; 6.10-rc1, 6.10-rc2, 6.10-rc3 — fixed in 6.1.95, 6.6.35, 6.9.6

How to fix

Upgrade to a fixed version: Linux kernel 6.1.95, 6.6.35, 6.9.6. Check the vendor advisory for mitigations.

References

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

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