CVE-2025-39706

medium

Description

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Destroy KFD debugfs after destroy KFD wq Since KFD proc content was moved to kernel debugfs, we can't destroy KFD debugfs before kfd_process_destroy_wq. Move kfd_process_destroy_wq prior to kfd_debugfs_fini to fix a kernel NULL pointer problem. It happens when /sys/kernel/debug/kfd was already destroyed in kfd_debugfs_fini but kfd_process_destroy_wq calls kfd_debugfs_remove_process. This line debugfs_remove_recursive(entry->proc_dentry); tries to remove /sys/kernel/debug/kfd/proc/<pid> while /sys/kernel/debug/kfd is already gone. It hangs the kernel by kernel NULL pointer. (cherry picked from commit 0333052d90683d88531558dcfdbf2525cc37c233)

References

https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8

https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3

https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994

https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206

https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c

Details

Source: Mitre, NVD

Published: 2025-09-05

Updated: 2025-09-08

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 5.5

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

Severity: Medium

EPSS

EPSS: 0.00018