CVE-2025-38153

Kernel-memory disclosure via unchecked USB short reads

Published Jul 3, 2025 · Updated May 11, 2026

Uninitialized-memory use in Linux kernel 5.0 through 6.15.3 allows local users to read kernel memory or interrupt service via USB. The aqc111_read_cmd() helper accepts a successful short usbnet_read_cmd() result, leaving part of the permanent-MAC buffer uninitialized before aqc111_bind() validates and copies it. Reachability requires local low-privileged access and an AQC111 USB network adapter that returns fewer bytes than requested.

CVSS severity7.1
High
EPSS probability0.17%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized-memory use in Linux kernel 5.0 through 6.15.3 allows local users to read kernel memory or interrupt service via USB. The aqc111_read_cmd() helper accepts a successful short usbnet_read_cmd() result, leaving part of the permanent-MAC buffer uninitialized before aqc111_bind() validates and copies it. Reachability requires local low-privileged access and an AQC111 USB network adapter that returns fewer bytes than requested.

The record

CVE
CVE-2025-38153
Published
Jul 3, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
Unavailable
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=5.0
  2. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <11273279012c922f37cfb4dd95d142803fc07b98
  3. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <30a9e834c74e260533b8d0885e3c89f6f32f7993
  4. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <405b0d610745fb5e84fc2961d9b960abb9f3d107
  5. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <60790d287c1a1ced3554d4a87c2f27bf299a932a
  6. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <7c01863b1c47f040d9674171e77789a423b9b128
  7. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <8c97655275482ef5384ce0501640630a0fc0f6f4
  8. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <acb47a40b5e38be03ef659b7bacdddc592ed73b7
  9. Affected versionversion=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <f398d2dfe450ce2c031d10b585448862d74a0501

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.0; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <11273279012c922f37cfb4dd95d142803fc07b98; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <30a9e834c74e260533b8d0885e3c89f6f32f7993; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <405b0d610745fb5e84fc2961d9b960abb9f3d107; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <60790d287c1a1ced3554d4a87c2f27bf299a932a; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <7c01863b1c47f040d9674171e77789a423b9b128; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <8c97655275482ef5384ce0501640630a0fc0f6f4; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <acb47a40b5e38be03ef659b7bacdddc592ed73b7; version=df2d59a2ab6c9ceac2c4104272fce03493b8f62f <f398d2dfe450ce2c031d10b585448862d74a0501

Published CVSS scores

7.1CanonicalCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/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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