CVE-2022-49051

Memory exposure and corruption via malformed USB data

Published Feb 26, 2025 · Updated Aug 12, 2026

Out-of-bounds access in the Linux AQC111 USB network driver allows physically proximate attackers to expose or corrupt kernel memory. aqc111_rx_fixup trusts packet counts, descriptor offsets, and packet lengths from received USB data without proving that metadata and payload regions remain within the socket buffer. A malicious or defective AQC111 USB device must supply the crafted receive data; resulting reads can expose heap contents, while writes can corrupt network-stack data.

CVSS severity6.8
Medium
EPSS probability0.43%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds access in the Linux AQC111 USB network driver allows physically proximate attackers to expose or corrupt kernel memory. aqc111_rx_fixup trusts packet counts, descriptor offsets, and packet lengths from received USB data without proving that metadata and payload regions remain within the socket buffer. A malicious or defective AQC111 USB device must supply the crafted receive data; resulting reads can expose heap contents, while writes can corrupt network-stack data.

The record

CVE
CVE-2022-49051
Published
Feb 26, 2025
Updated
Aug 12, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-125, CWE-787, T1200
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 26, 2025CVE publishedPublication date reported by the CVE source.
  2. Aug 12, 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=361459cd9642631f048719169da9ef14cbf4a932 <36311fe98f55dea9200c69e2dd6d6ddb8fc94080
  2. Affected versionversion=361459cd9642631f048719169da9ef14cbf4a932 <404998a137bcb8a926f7c949030afbe285472593
  3. Affected versionversion=361459cd9642631f048719169da9ef14cbf4a932 <afb8e246527536848b9b4025b40e613edf776a9d
  4. Affected versionversion=361459cd9642631f048719169da9ef14cbf4a932 <b416898442f2b6aa9f1b2f2968ce07e3abaa05f7
  5. Affected versionversion=361459cd9642631f048719169da9ef14cbf4a932 <d90df6da50c56ad8b1a132e3cf86b6cdf8f507b7
  6. Affected versionversion=5.0

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=361459cd9642631f048719169da9ef14cbf4a932 <36311fe98f55dea9200c69e2dd6d6ddb8fc94080; version=361459cd9642631f048719169da9ef14cbf4a932 <404998a137bcb8a926f7c949030afbe285472593; version=361459cd9642631f048719169da9ef14cbf4a932 <afb8e246527536848b9b4025b40e613edf776a9d; version=361459cd9642631f048719169da9ef14cbf4a932 <b416898442f2b6aa9f1b2f2968ce07e3abaa05f7; version=361459cd9642631f048719169da9ef14cbf4a932 <d90df6da50c56ad8b1a132e3cf86b6cdf8f507b7; version=5.0

Published CVSS scores

6.8CanonicalCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

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

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-787Out-of-bounds Write
T1200Hardware Additions

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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