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Linux KernelOperating system · Linux

CVE-2025-38158

MEDIUM · 5.5 CVSS v3.1 Published 2025-07-03
Fix available
A fix is available. Upgrade to 6.1.142 / 6.6.94 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click Patch available

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
In the Linux kernel, the following vulnerability has been resolved: hisi_acc_vfio_pci: fix XQE dma address error The dma addresses of EQE and AEQE are wrong after migration and results in guest kernel-mode encryption services failure. Comparing the definition of hardware registers, we found that there was an error when the data read from the register was combined into an address. Therefore, the address combination sequence needs to be corrected. Even after fixing the above problem, we still have an issue where the Guest from an old kernel can get migrated to new kernel and may result in wrong data. In order to ensure that the address is correct after migration, if an old magic number is detected, the dma address needs to be updated.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis

A detailed technical summary for this CVE is being prepared.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
Linux KernelOperating system
Affected:>= 5.18, < 6.1.142>= 6.2, < 6.6.94>= 6.7, < 6.12.34>= 6.13, < 6.15.3
Debian LinuxOperating system
Affected:= 11.0

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 6.1.142 / 6.6.94 / 6.12.34 or later
Fixed in 6.1.1426.6.946.12.34
Vendor patch git.kernel.org →
Recommended fix High confidence

6.1.142+ / 6.6.94+ / 6.12.34+ / 6.15.3+ (depending on current branch)

  1. Identify the current running kernel version using 'uname -r'
  2. Determine which version range the current kernel falls into based on the affected ranges: >= 5.18 to < 6.1.142, >= 6.2 to < 6.6.94, >= 6.7 to < 6.12.34, or >= 6.13 to < 6.15.3
  3. Upgrade the kernel to the first fixed version in that branch: 6.1.142 or later for 6.1.x, 6.6.94 or later for 6.6.x, 6.12.34 or later for 6.12.x, or 6.15.3 or later for 6.15.x
  4. For Debian 11.0 systems, apply Debian security updates or upgrade to a newer Debian stable release that includes the fixed kernel version
  5. Reboot the system after kernel upgrade to load the fixed version
  6. Verify the fix is applied by checking the kernel version and confirming the hisi_acc_vfio_pci driver behavior
Caveat Standard kernel upgrade risks apply - ensure compatibility with custom drivers, modules, and system requirements before upgrading

Generated from the published advisory — verify against the referenced sources before acting.

We can perform the upgrade in your staging environment and verify nothing breaks — typical engagement from $1,600. Get the upgrade done

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2025-38158 in production — separate from our analysis above.

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
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