CVE-2022-49226

Kernel crash via incomplete ASIX USB reads

Published Feb 26, 2025 · Updated May 11, 2026

Uninitialized-value use in the Linux ASIX USB network driver from 4.9 allows attackers to crash the kernel through short USB reads. asix_read_cmd() accepts fewer bytes than its caller requested, leaving callers to consume incompletely initialized response data without handling the short transfer. Reachability requires an ASIX USB network adapter or equivalent emulated device that can return a truncated response; the bounded consequence is loss of system availability.

CVSS severityUnavailable
Unscored
EPSS probability0.26%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Uninitialized-value use in the Linux ASIX USB network driver from 4.9 allows attackers to crash the kernel through short USB reads. asix_read_cmd() accepts fewer bytes than its caller requested, leaving callers to consume incompletely initialized response data without handling the short transfer. Reachability requires an ASIX USB network adapter or equivalent emulated device that can return a truncated response; the bounded consequence is loss of system availability.

The record

CVE
CVE-2022-49226
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Feb 26, 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=4.9
  2. Affected versionversion=d9fe64e511144c1ee7d7555b4111f09dde9692ef <662ff765470ad0d11a1153d6d8e99d69a98e60b4
  3. Affected versionversion=d9fe64e511144c1ee7d7555b4111f09dde9692ef <920a9fa27e7805499cfe78491b36fed2322c02ec
  4. Affected versionversion=d9fe64e511144c1ee7d7555b4111f09dde9692ef <9ea8d2fca8fea3b17005b4dc02f8ef15f7a2fb97
  5. Affected versionversion=d9fe64e511144c1ee7d7555b4111f09dde9692ef <b96a7265f763b37ff3138b9ca8122a950f13b00e

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

The Linux Kernel Organization · Linuxversion=4.9; version=d9fe64e511144c1ee7d7555b4111f09dde9692ef <662ff765470ad0d11a1153d6d8e99d69a98e60b4; version=d9fe64e511144c1ee7d7555b4111f09dde9692ef <920a9fa27e7805499cfe78491b36fed2322c02ec; version=d9fe64e511144c1ee7d7555b4111f09dde9692ef <9ea8d2fca8fea3b17005b4dc02f8ef15f7a2fb97; version=d9fe64e511144c1ee7d7555b4111f09dde9692ef <b96a7265f763b37ff3138b9ca8122a950f13b00e

Published CVSS scores

No CVSS assessment is available in this record.

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)
Vectorlocal
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1499.004Application or System Exploitation

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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