FKIE_CVE-2025-39706

Vulnerability from fkie_nvd - Published: 2025-09-05 18:15 - Updated: 2025-11-03 18:16
Severity ?
Summary
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)
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8
af854a3a-2127-422b-91ae-364da2661108https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
Impacted products
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{
  "cveTags": [],
  "descriptions": [
    {
      "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\u0027t 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-\u003eproc_dentry);\ntries to remove /sys/kernel/debug/kfd/proc/\u003cpid\u003e while\n/sys/kernel/debug/kfd is already gone. It hangs the kernel by kernel\nNULL pointer.\n\n(cherry picked from commit 0333052d90683d88531558dcfdbf2525cc37c233)"
    }
  ],
  "id": "CVE-2025-39706",
  "lastModified": "2025-11-03T18:16:42.750",
  "metrics": {},
  "published": "2025-09-05T18:15:47.817",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8"
    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
      "url": "https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Awaiting Analysis"
}


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