CVE-2022-0742Network attack vector

Remote host crash via unreleased ICMPv6 buffers

Published Mar 18, 2022 · Updated Apr 21, 2025

Memory leakage in the ICMPv6 MLD handler in Linux Kernel 5.13 through 5.17-rc6 allows remote attackers to crash hosts with type 130 or 131 packets. igmp6_event_query() and igmp6_event_report() fail to release received socket buffers when interface lookup fails or their work queues are full. No authentication or user interaction is required; repeated MLD query or report traffic can exhaust host memory and terminate service.

CVSS severity9.1
Critical
EPSS probability5.04%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in the ICMPv6 MLD handler in Linux Kernel 5.13 through 5.17-rc6 allows remote attackers to crash hosts with type 130 or 131 packets. igmp6_event_query() and igmp6_event_report() fail to release received socket buffers when interface lookup fails or their work queues are full. No authentication or user interaction is required; repeated MLD query or report traffic can exhaust host memory and terminate service.

The record

CVE
CVE-2022-0742
Published
Mar 18, 2022
Updated
Apr 21, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-401, CWE-275, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 21, 2025Record 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=unspecified <=5.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=unspecified <=5.13

Published CVSS scores

7.5UbuntuCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
7.8NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
9.1Google Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-401Missing Release of Memory after Effective Lifetime
CWE-275Permission Issues
T1499.004Endpoint Denial of Service: Application 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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