CVE-2022-49269

Service interruption via unsanitized CAN ID comparison

Published Feb 26, 2025 · Updated May 11, 2026

Improper CAN ID validation in the Linux kernel ISO-TP module allows local users to interrupt service through a crafted socket binding. The isotp_bind() path compares raw receive and transmit CAN identifiers before masking SFF/EFF flag bits, so distinct noncompliant inputs can collapse to the same 11-bit ID after validation and place the state machine in an unreachable status. Low-privileged local access and creation of a CAN ISO-TP socket are required; the published analysis identifies availability loss but not a specific hang, crash, reboot, or shutdown.

CVSS severity5.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper CAN ID validation in the Linux kernel ISO-TP module allows local users to interrupt service through a crafted socket binding. The isotp_bind() path compares raw receive and transmit CAN identifiers before masking SFF/EFF flag bits, so distinct noncompliant inputs can collapse to the same 11-bit ID after validation and place the state machine in an unreachable status. Low-privileged local access and creation of a CAN ISO-TP socket are required; the published analysis identifies availability loss but not a specific hang, crash, reboot, or shutdown.

The record

CVE
CVE-2022-49269
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
T1499.004
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=5.10
  2. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <3ea566422cbde9610c2734980d1286ab681bb40e
  3. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7b4652fc71dcec043977a6def80ef5034c913615
  4. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <cf522d741f5301223cc94b978eb1603c7590d65e
  5. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <d72866a7f5326160d2a9d945a33eb6ef1883e25d
  6. Affected versionversion=e057dd3fc20ffb3d7f150af46542a51b59b90127 <f343dbe82314ab457153c9afd970be4e9e553020

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=5.10; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <3ea566422cbde9610c2734980d1286ab681bb40e; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <7b4652fc71dcec043977a6def80ef5034c913615; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <cf522d741f5301223cc94b978eb1603c7590d65e; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <d72866a7f5326160d2a9d945a33eb6ef1883e25d; version=e057dd3fc20ffb3d7f150af46542a51b59b90127 <f343dbe82314ab457153c9afd970be4e9e553020

Published CVSS scores

5.5NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
3.3SUSECVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

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

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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