misc: microchip: pci1xxxx: fix double free in the error handling of gp_aux_bus_probe()
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.
02 / AFFECTED SOFTWARE
Affected packages
03 / CONNECTIONS
Connected vulnerabilities
04 / EVIDENCE
Source records
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.
05 / REFERENCES
Further evidence
- https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
- 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://github.com/CVEProject/cvelistV5/tree/main/cves/2024/36xxx/CVE-2024-36973.json
- https://lists.debian.org/debian-lts-announce/2025/01/msg00001.html
- https://nvd.nist.gov/vuln/detail/CVE-2024-36973