CVE-2025-38314

Service interruption via oversized admin completion length

Published Jul 10, 2025 · Updated Aug 5, 2026

Incorrect result sizing in Linux kernel 6.13 through 6.15.2 allows local users to interrupt service during virtio-pci live migration. virtio_pci_admin_dev_parts_get stores the virtqueue_get_buf completion length, including eight status bytes, in result_sg_size instead of the payload length. The fault is reached when device-parts state is read during live migration and can transfer excess data or make the kernel read past its allocated result buffer, causing migration failures.

CVSS severity5.5
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect result sizing in Linux kernel 6.13 through 6.15.2 allows local users to interrupt service during virtio-pci live migration. virtio_pci_admin_dev_parts_get stores the virtqueue_get_buf completion length, including eight status bytes, in result_sg_size instead of the payload length. The fault is reached when device-parts state is read during live migration and can transfer excess data or make the kernel read past its allocated result buffer, causing migration failures.

The record

CVE
CVE-2025-38314
Published
Jul 10, 2025
Updated
Aug 5, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 10, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 5, 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=6.13
  2. Affected versionversion=704806ca400e5daa86c110f14bfdda9d28203bb7 <920b6720bb63893b81516c0c45884a8350f9e4bf
  3. Affected versionversion=704806ca400e5daa86c110f14bfdda9d28203bb7 <9ef41ebf787fcbde99ac404ae473f8467641f983

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=6.13; version=704806ca400e5daa86c110f14bfdda9d28203bb7 <920b6720bb63893b81516c0c45884a8350f9e4bf; version=704806ca400e5daa86c110f14bfdda9d28203bb7 <9ef41ebf787fcbde99ac404ae473f8467641f983

Published CVSS scores

5.5NVDCVSS: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

No sourced classifications are available.

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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