CVE-2022-49374

System crash via oversized TIPC bearer name

Published Feb 26, 2025 · Updated May 11, 2026

Use of uninitialized memory in affected Linux kernel releases allows local users to crash the system via a crafted TIPC bearer name. The __tipc_nl_bearer_enable path accepts TIPC_NLA_BEARER_NAME without checking its attribute length, then treats its data as a terminated string during bearer validation and error logging. Reaching the Generic Netlink operation requires local low-privileged access; the published assessment identifies availability loss only, with no data disclosure or modification.

CVSS severity5.5
Medium
EPSS probability0.28%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Use of uninitialized memory in affected Linux kernel releases allows local users to crash the system via a crafted TIPC bearer name. The __tipc_nl_bearer_enable path accepts TIPC_NLA_BEARER_NAME without checking its attribute length, then treats its data as a terminated string during bearer validation and error logging. Reaching the Generic Netlink operation requires local low-privileged access; the published assessment identifies availability loss only, with no data disclosure or modification.

The record

CVE
CVE-2022-49374
Published
Feb 26, 2025
Updated
May 11, 2026
Vendor
The Linux Kernel Organization
Product
Linux
Classifications
CWE-908, 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=4.17
  2. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <292be63c382ce20673ee61dff1ee9ed4a3dcaae7
  3. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <3af15272cde28fe5c8489174b8624e232c1775ec
  4. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <7f36f798f89bf32c0164049cb0e3fd1af613d0bb
  5. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <8b91d0dfc839e67708c905648cd0e7507a2263e5
  6. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <92a930fcf4250fe961f6238b99af0bc405799f39
  7. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <b8fac8e321044a9ac50f7185b4e9d91a7745e4b0
  8. Affected versionversion=cb30a63384bc91d5da06e1cede1115f666a29271 <f07670871f4d19e613740eebe210e7e9ea535973

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linuxversion=4.17; version=cb30a63384bc91d5da06e1cede1115f666a29271 <292be63c382ce20673ee61dff1ee9ed4a3dcaae7; version=cb30a63384bc91d5da06e1cede1115f666a29271 <3af15272cde28fe5c8489174b8624e232c1775ec; version=cb30a63384bc91d5da06e1cede1115f666a29271 <7f36f798f89bf32c0164049cb0e3fd1af613d0bb; version=cb30a63384bc91d5da06e1cede1115f666a29271 <8b91d0dfc839e67708c905648cd0e7507a2263e5; version=cb30a63384bc91d5da06e1cede1115f666a29271 <92a930fcf4250fe961f6238b99af0bc405799f39; version=cb30a63384bc91d5da06e1cede1115f666a29271 <b8fac8e321044a9ac50f7185b4e9d91a7745e4b0; version=cb30a63384bc91d5da06e1cede1115f666a29271 <f07670871f4d19e613740eebe210e7e9ea535973

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
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

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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

CWE-908Use of Uninitialized Resource
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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