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Vulnerabilities

Vulnerability · CVE-2025-38520

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Don't call mmput from MMU notifier callback If the process is exiting, the mmput inside mmu notifier

Published Aug 16, 2025 · catalog updated May 23, 2026 · Linux Linux

Check this week

CVE-2025-38520 is not in CISA KEV. FIRST estimates a 12.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
None0.0
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
12.00%
Remediation
Version ranges on file
Affected products
vendor Linux Linux fa582c6f3684ac0098a9d02ddf0ed52a02b37127 <145a56bd68f4bff098d59fbc7c263d20dfef4fc4

In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Don't call mmput from MMU notifier callback If the process is exiting, the mmput inside mmu notifier callback from compactd or fork or numa balancing could release the last reference of mm struct to call exit_mmap and free_pgtable, this triggers deadlock with below backtrace. The deadlock will leak kfd process as mmu notifier release is not called and cause VRAM leaking. The fix is to take mm reference mmget_non_zero when adding prange to the deferred list to pair with mmput in deferred list work. If prange split a

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor Linux Linux fa582c6f3684ac0098a9d02ddf0ed52a02b37127 <145a56bd68f4bff098d59fbc7c263d20dfef4fc4fa582c6f3684ac0098a9d02ddf0ed52a02b37127 <145a56bd68f4bff098d59fbc7c263d20dfef4fc4

How to fix CVE-2025-38520

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2025-38520 is not in CISA KEV. FIRST estimates a 12.00% chance of exploitation in the next 30 days. Check whether you run Linux Linux.

Which versions are affected?

Compare what you have installed with Linux Linux fa582c6f3684ac0098a9d02ddf0ed52a02b37127 <145a56bd68f4bff098d59fbc7c263d20dfef4fc4 fa582c6f3684ac0098a9d02ddf0ed52a02b37127 <145a56bd68f4bff098d59fbc7c263d20dfef4fc4. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 12.00%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

Timeline

Detection, updates, and resolution for this record.

  1. Aug 16, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Don't call mmput from MMU notifier callback If the process is exiting, the mmput inside mmu notifier callback from compactd or fork or numa balancing could release the last reference of mm struct to call exit_mmap and free_pgtable, this triggers deadlock with below backtrace. The deadlock will leak kfd process as mmu n

  2. May 23, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Don't call mmput from MMU notifier callback If the process is exiting, the mmput inside mmu notifier callback from compactd or fork or numa balancing could release the last reference of mm struct to call exit_mmap and free_pgtable, this triggers deadlock with below backtrace. The deadlock will leak kfd process as mmu n

Sources

  • CVE.orgVulnerability recordCVE-2025-38520

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-25078

    In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Don't call mmput from MMU notifier callback If the process is exiting, the mmput inside mmu notifier callback from compactd or fork or numa balancing could release the last reference of mm struct to c

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog May 23, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.