CVE-2025-39706

drm/amdkfd: Destroy KFD debugfs after destroy KFD wq

State: Published
Severity: Not scored
Published: Sep 5, 2025
Updated: May 12, 2026
Reserved: Apr 16, 2025

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)

Scores

The record has no CVSS score.

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
LinuxLinux	4a488a7ad71401169cecee75dc94bcce642e2c53 to before fc35c955da799ba62f6f977d58e0866d0251e3f8Affected 4a488a7ad71401169cecee75dc94bcce642e2c53 to before 74ee7445c3b61c3bd899a54bd82c1982cb3a8206Affected 4a488a7ad71401169cecee75dc94bcce642e2c53 to before 96609a51e6134542bf90e053c2cd2fe4f61ebce3Affected 4a488a7ad71401169cecee75dc94bcce642e2c53 to before 910735ded17cc306625e7e1cdcc8102f7ac60994Affected 4a488a7ad71401169cecee75dc94bcce642e2c53 to before 2e58401a24e7b2d4ec619104e1a76590c1284a4cAffected
LinuxLinux	3.19Affected before 3.19Not affected 6.1.149 through 6.1.Not affected 6.6.103 through 6.6.Not affected 6.12.44 through 6.12.Not affected 6.16.4 through 6.16.Not affected 6.17 and laterNot affected

Product

Versions

LinuxLinux

4a488a7ad71401169cecee75dc94bcce642e2c53 to before fc35c955da799ba62f6f977d58e0866d0251e3f8Affected
4a488a7ad71401169cecee75dc94bcce642e2c53 to before 74ee7445c3b61c3bd899a54bd82c1982cb3a8206Affected
4a488a7ad71401169cecee75dc94bcce642e2c53 to before 96609a51e6134542bf90e053c2cd2fe4f61ebce3Affected
4a488a7ad71401169cecee75dc94bcce642e2c53 to before 910735ded17cc306625e7e1cdcc8102f7ac60994Affected
4a488a7ad71401169cecee75dc94bcce642e2c53 to before 2e58401a24e7b2d4ec619104e1a76590c1284a4cAffected

LinuxLinux

3.19Affected
before 3.19Not affected
6.1.149 through 6.1.*Not affected
6.6.103 through 6.6.*Not affected
6.12.44 through 6.12.*Not affected
6.16.4 through 6.16.*Not affected
6.17 and laterNot affected

References

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