CVE-2025-38158

Guest encryption failure via misordered DMA address assembly

Published Jul 3, 2025 · Updated May 11, 2026

DMA address corruption in the Linux hisi_acc_vfio_pci driver allows local users to interrupt guest kernel-mode encryption services after migration. Restore-state code combines EQE and AEQE register fragments in the wrong order and fails to translate legacy migration data, producing invalid queue DMA addresses. Reachability requires a Hisilicon accelerator assigned through VFIO and device migration; the resulting impact is failure of guest kernel-mode encryption services.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

DMA address corruption in the Linux hisi_acc_vfio_pci driver allows local users to interrupt guest kernel-mode encryption services after migration. Restore-state code combines EQE and AEQE register fragments in the wrong order and fails to translate legacy migration data, producing invalid queue DMA addresses. Reachability requires a Hisilicon accelerator assigned through VFIO and device migration; the resulting impact is failure of guest kernel-mode encryption services.

The record

CVE
CVE-2025-38158
Published
Jul 3, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 3, 2025CVE publishedPublication date reported by the CVE source.
  2. May 11, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=5.18
  2. Affected versionversion=b0eed085903e7758532696d64397901a75bba8ba <7710c883eb8cb5cf510ca47ec0e26c6cb7e94a4f
  3. Affected versionversion=b0eed085903e7758532696d64397901a75bba8ba <809a9c10274e1bcf6d05f1c0341459a425a4f05f
  4. Affected versionversion=b0eed085903e7758532696d64397901a75bba8ba <884a76e813178778d271fea59783763d32bb7e72
  5. Affected versionversion=b0eed085903e7758532696d64397901a75bba8ba <8bb7170c5a055ea17c6857c256ee73c10ff872eb
  6. Affected versionversion=b0eed085903e7758532696d64397901a75bba8ba <f0423873e7aeb69cb68f4e8fa3827832e7b037ba

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.18; version=b0eed085903e7758532696d64397901a75bba8ba <7710c883eb8cb5cf510ca47ec0e26c6cb7e94a4f; version=b0eed085903e7758532696d64397901a75bba8ba <809a9c10274e1bcf6d05f1c0341459a425a4f05f; version=b0eed085903e7758532696d64397901a75bba8ba <884a76e813178778d271fea59783763d32bb7e72; version=b0eed085903e7758532696d64397901a75bba8ba <8bb7170c5a055ea17c6857c256ee73c10ff872eb; version=b0eed085903e7758532696d64397901a75bba8ba <f0423873e7aeb69cb68f4e8fa3827832e7b037ba

Published CVSS scores

5.5UbuntuCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Endpoint Denial of Service: Application or System Exploitation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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