🛡️ CVE-2025-38064 — kernel

🟠 CVSS 7.8 — High ✅ No Known Exploit NVD
7.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

virtio: break and reset virtio devices on device_shutdown()

In the Linux kernel, the following vulnerability has been resolved:

virtio: break and reset virtio devices on device_shutdown()

Hongyu reported a hang on kexec in a VM. QEMU reported invalid memory

accesses during the hang.

Invalid read at addr 0x102877002, size 2, region '(null)', reason: rejected

Invalid write at addr 0x102877A44, size 2, region '(null)', reason: rejected

...

It was traced down to virtio-console. Kexec works fine if virtio-console

is not in use.

The issue is that virtio-console continues to write to the MMIO even after

underlying virtio-pci device is reset.

Additionally, Eric noticed that IOMMUs are reset before devices, if

devices are not reset on shutdown they continue to poke at guest memory

and get errors from the IOMMU. Some devices get wedged then.

The problem can be solved by breaking all virtio devices on virtio

bus shutdown, then resetting them.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality high, integrity high, availability high.

Affected software

CVE-2025-38064 is recorded against 2 packages.

  • kernel (from 2.6.24 up to 6.14.9)
  • linux-kernel (fixed in 6.14.9)

Timeline and source

Published on 18 June 2025 and last revised on 6 August 2026. No public exploit is currently recorded for this entry. A vendor advisory or fix has been published. Record sourced from NVD.

References

git.kernel.org (Web)
git.kernel.org (Web)
github.com (Advisory)
nvd.nist.gov (Advisory)
git.kernel.org (Package)

CVE-2025-38064 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity High
CVSS Score 7.8
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE N/A
Public Exploit ✅ No
Source NVD
Published 2025-06-18
Updated 2026-08-12
Modified 2026-08-06

Affected Packages

Software From version Fixed in
kernel 2.6.24 6.14.9
linux-kernel — 6.14.9

Similar Threats

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