CVE-2025-39706

MEDIUM EPSS 3.4%
Published Sep 5, 20259mo ago · Modified Jun 17, 20261w ago
5.5 CVSS 3.1
Medium
Find Similar
Published Sep 5, 2025 9mo ago
Last Modified Jun 17, 2026 1w ago

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)

CVSS Details

Base Score
5.5
Exploitability
1.8
Impact
3.6
Vector string
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Attack Vector Local
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope Unchanged
Confidentiality None
Integrity None
Availability High

Threat Intelligence

EPSS Exploit Probability
3.4% percentile
Exploit & Patch Status
No Known Exploit
Patch Available

Weaknesses 1

CWE-476 NULL Pointer Dereference Memory Safety

Affected Products 5

VendorProductVersionRange
linuxlinux_kernel*≥3.19  –  <6.1.149
linuxlinux_kernel*≥6.2  –  <6.6.103
linuxlinux_kernel*≥6.7  –  <6.12.44
linuxlinux_kernel*≥6.13  –  <6.16.4
debiandebian_linux11.0any

References 7

  • cert-portal.siemens.com https://cert-portal.siemens.com/productcert/html/ssa-032379.html
  • git.kernel.org https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8
    Patch
  • lists.debian.org https://lists.debian.org/debian-lts-announce/2025/10/msg00008.html
    Mailing ListThird Party Advisory

Remediation

  • git.kernel.org https://git.kernel.org/stable/c/2e58401a24e7b2d4ec619104e1a76590c1284a4c
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/74ee7445c3b61c3bd899a54bd82c1982cb3a8206
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/910735ded17cc306625e7e1cdcc8102f7ac60994
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/96609a51e6134542bf90e053c2cd2fe4f61ebce3
    Patch
  • git.kernel.org https://git.kernel.org/stable/c/fc35c955da799ba62f6f977d58e0866d0251e3f8
    Patch