CVE-2022-49642

Kernel crash via split-header length overflow

Published Feb 26, 2025 · Updated May 11, 2026

Integer overflow in the stmmac DWC Ethernet driver in Linux allows local users to crash the kernel on Tegra194 systems. In the receive path, split-header processing accepts a larger-than-expected buffer length and overflows the total-length calculation, producing an extremely large length. The condition requires a Tegra194 system using the DWC QoS Ethernet path with split-header processing enabled; no data exposure or modification is reported.

CVSS severity5.5
Medium
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

Integer overflow in the stmmac DWC Ethernet driver in Linux allows local users to crash the kernel on Tegra194 systems. In the receive path, split-header processing accepts a larger-than-expected buffer length and overflows the total-length calculation, producing an extremely large length. The condition requires a Tegra194 system using the DWC QoS Ethernet path with split-header processing enabled; no data exposure or modification is reported.

The record

CVE
CVE-2022-49642
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-190, CAPEC-92, T1499
Attack vector
local
Privileges
authenticated

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=5.4
  2. Affected versionversion=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <029c1c2059e9c4b38f97a06204cdecd10cfbeb8a
  3. Affected versionversion=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <2968830c9b47ce093237483c6207c61065712386
  4. Affected versionversion=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <9cc8edc571b871d974b3289868553f9ce544aba6
  5. Affected versionversion=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <cfa4caf3e881ad6dd366c903c34f1c7f21b857ab
  6. Affected versionversion=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <d5c315a787652c35045044877a249f7d5c8a4104

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.4; version=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <029c1c2059e9c4b38f97a06204cdecd10cfbeb8a; version=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <2968830c9b47ce093237483c6207c61065712386; version=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <9cc8edc571b871d974b3289868553f9ce544aba6; version=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <cfa4caf3e881ad6dd366c903c34f1c7f21b857ab; version=67afd6d1cfdf0d0461fe3c4c922447f3e9b1c6ee <d5c315a787652c35045044877a249f7d5c8a4104

Published CVSS scores

5.5NIST NVDCVSS: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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
CAPEC-92Forced Integer Overflow
T1499Endpoint Denial of Service

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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