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)
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Linux Linux
Default version status: unaffected
4a488a7ad71401169cecee75dc94bcce642e2c53 to < fc35c955da799ba62f6f977d58e0866d0251e3f8affected4a488a7ad71401169cecee75dc94bcce642e2c53 to < 74ee7445c3b61c3bd899a54bd82c1982cb3a8206affected4a488a7ad71401169cecee75dc94bcce642e2c53 to < 96609a51e6134542bf90e053c2cd2fe4f61ebce3affected4a488a7ad71401169cecee75dc94bcce642e2c53 to < 910735ded17cc306625e7e1cdcc8102f7ac60994affected4a488a7ad71401169cecee75dc94bcce642e2c53 to < 2e58401a24e7b2d4ec619104e1a76590c1284a4caffected
Linux Linux
Default version status: affected
3.19affected0 to < 3.19unaffected6.1.149 to ≤ 6.1.*unaffected6.6.103 to ≤ 6.6.*unaffected6.12.44 to ≤ 6.12.*unaffected6.16.4 to ≤ 6.16.*unaffected6.17 to ≤ *unaffected
References
- https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8 ↗
- https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206 ↗
- https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3 ↗
- https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994 ↗
- https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c ↗
- https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html ↗
- https://cert-portal.siemens.com/productcert/html/ssa-032379.html ↗