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Vulnerabilities

Vulnerability · CVE-2025-38594

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix UAF on sva unbind with pending IOPFs Commit 17fce9d2336d ("iommu/vt-d: Put iopf enablement in do

Published Aug 19, 2025 · catalog updated Aug 5, 2026 · Linux Linux

Check this week

CVE-2025-38594 is not in CISA KEV. FIRST estimates a 16.00% 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
High7.8
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
16.00%
Remediation
Vendor / distro source
Affected products
vendor Linux Linux patch: 6.17

In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix UAF on sva unbind with pending IOPFs Commit 17fce9d2336d ("iommu/vt-d: Put iopf enablement in domain attach path") disables IOPF on device by removing the device from its IOMMU's IOPF queue when the last IOPF-capable domain is detached from the device. Unfortunately, it did this in a wrong place where there are still pending IOPFs. As a result, a use-after-free error is potentially triggered and eventually a kernel panic with a kernel trace similar to the following: refcount_t: underflow; use-after-free. WARNIN

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 patch: 6.17patch: 6.17

How to fix CVE-2025-38594

What to do

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

Should you patch?

CVE-2025-38594 is not in CISA KEV. FIRST estimates a 16.00% 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 patch: 6.17 patch: 6.17. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 16.00%. 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 19, 2025 · EUVD

    Detected

    In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix UAF on sva unbind with pending IOPFs Commit 17fce9d2336d ("iommu/vt-d: Put iopf enablement in domain attach path") disables IOPF on device by removing the device from its IOMMU's IOPF queue when the last IOPF-capable domain is detached from the device. Unfortunately, it did this in a wrong place where there are sti

  2. Aug 5, 2026 · EUVD

    Updated

    In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix UAF on sva unbind with pending IOPFs Commit 17fce9d2336d ("iommu/vt-d: Put iopf enablement in domain attach path") disables IOPF on device by removing the device from its IOMMU's IOPF queue when the last IOPF-capable domain is detached from the device. Unfortunately, it did this in a wrong place where there are sti

Sources

  • CVE.orgVulnerability recordCVE-2025-38594

    Official CVE identifier

    cve.org
  • EUVDVulnerability recordEUVD-2025-27923

    In the Linux kernel, the following vulnerability has been resolved: iommu/vt-d: Fix UAF on sva unbind with pending IOPFs Commit 17fce9d2336d ("iommu/vt-d: Put iopf enablement in domain attach path") disables IOPF on device by removing the device from its IOMMU's IOPF queue when t

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Aug 5, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.