Description (CNA)
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 (CNA)
| Vendor / product | Versions |
|---|---|
| Linux / Linux | affected 4a488a7ad71401169cecee75dc94bcce642e2c53 before fc35c955da799ba62f6f977d58e0866d0251e3f8; affected 4a488a7ad71401169cecee75dc94bcce642e2c53 before 74ee7445c3b61c3bd899a54bd82c1982cb3a8206; affected 4a488a7ad71401169cecee75dc94bcce642e2c53 before 96609a51e6134542bf90e053c2cd2fe4f61ebce3; affected 4a488a7ad71401169cecee75dc94bcce642e2c53 before 910735ded17cc306625e7e1cdcc8102f7ac60994; affected 4a488a7ad71401169cecee75dc94bcce642e2c53 before 2e58401a24e7b2d4ec619104e1a76590c1284a4c |
| Linux / Linux | affected 3.19; unaffected 0 before 3.19; unaffected 6.1.149 through 6.1.*; unaffected 6.6.103 through 6.6.*; unaffected 6.12.44 through 6.12.*; unaffected 6.16.4 through 6.16.*; unaffected 6.17 through * |
CWE
No CWE identifiers supplied.
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
ADP enrichment
No English description supplied.
No English description supplied.