CVE-2025-39706
Full vulnerability record from the local CVENow database.
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)
Severity
MEDIUM
CVSS score
5.5
(v3.1)
Vulnerability status
Modified
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2025-09-05 18:15:47.817000
Last modified
2026-10-19 21:10:00.160000
View original CVE JSON
{
"id": "CVE-2025-39706",
"sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
"published": "2025-09-05T18:15:47.817",
"lastModified": "2026-10-19T21:10:00.160",
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"lang": "en",
"value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Destroy KFD debugfs after destroy KFD wq\n\nSince KFD proc content was moved to kernel debugfs, we can't destroy KFD\ndebugfs before kfd_process_destroy_wq. Move kfd_process_destroy_wq prior\nto kfd_debugfs_fini to fix a kernel NULL pointer problem. It happens\nwhen /sys/kernel/debug/kfd was already destroyed in kfd_debugfs_fini but\nkfd_process_destroy_wq calls kfd_debugfs_remove_process. This line\n debugfs_remove_recursive(entry->proc_dentry);\ntries to remove /sys/kernel/debug/kfd/proc/<pid> while\n/sys/kernel/debug/kfd is already gone. It hangs the kernel by kernel\nNULL pointer.\n\n(cherry picked from commit 0333052d90683d88531558dcfdbf2525cc37c233)"
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"lang": "es",
"value": "En el kernel de Linux, la siguiente vulnerabilidad ha sido resuelta:\n\ndrm/amdkfd: Destruir KFD debugfs después de destruir KFD wq\n\nDado que el contenido de KFD proc fue movido a kernel debugfs, no podemos destruir KFD debugfs antes de kfd_process_destroy_wq. Mover kfd_process_destroy_wq antes de kfd_debugfs_fini para solucionar un problema de puntero NULL del kernel. Sucede cuando /sys/kernel/debug/kfd ya fue destruido en kfd_debugfs_fini pero kfd_process_destroy_wq llama a kfd_debugfs_remove_process. Esta línea\n debugfs_remove_recursive(entry->proc_dentry);\nintenta eliminar /sys/kernel/debug/kfd/proc/<pid> mientras /sys/kernel/debug/kfd ya no existe. Cuelga el kernel por un puntero NULL del kernel.\n\n(seleccionado de la confirmación 0333052d90683d88531558dcfdbf2525cc37c233)"
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