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
linux: linux kernel; debian: debian linux
References7
- git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c Patch
- git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206 Patch
- git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994 Patch
- git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3 Patch
- git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8 Patch
- lists.debian.org/debian-lts-announce/2025/10/msg00008.html Mailing ListThird Party Advisory
- cert-portal.siemens.com/productcert/html/ssa-032379.html
Metrics
- CVSS 3.1
-
5.5
MEDIUM
Score source: NVD
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 0% percentile: 5 · as of 8 November 2026
- CWE
- CWE-476
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