CVE-2022-3567

Kernel misbehavior via torn sk_prot reads

Published Oct 17, 2022 · Updated Apr 15, 2025

A data race in the Linux kernel IPv6 implementation allows remote authenticated users on an adjacent network to trigger undesired behavior. Functions in inet6_stream_ops and inet6_dgram_ops read sk->sk_prot without socket or RTNL locking and without READ_ONCE, allowing load tearing while IPV6_ADDRFORM changes the pointer. Exploitation requires adjacent-network access, low privileges, and high complexity; public sources do not define the resulting behavior more precisely.

CVSS severity4.6
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A data race in the Linux kernel IPv6 implementation allows remote authenticated users on an adjacent network to trigger undesired behavior. Functions in inet6_stream_ops and inet6_dgram_ops read sk->sk_prot without socket or RTNL locking and without READ_ONCE, allowing load tearing while IPV6_ADDRFORM changes the pointer. Exploitation requires adjacent-network access, low privileges, and high complexity; public sources do not define the resulting behavior more precisely.

The record

CVE
CVE-2022-3567
Published
Oct 17, 2022
Updated
Apr 15, 2025
Vendor
The Linux Kernel Organization
Product
Linux Kernel
Classifications
CWE-362
Attack vector
adjacent
Privileges
authenticated

Timeline

How it unfolded

  1. Oct 17, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 15, 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?

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  1. Affected versionversion=n/a

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesauthenticated

What is affected?

The Linux Kernel Organization · Linux Kernelversion=n/a

Published CVSS scores

4.6VulDBCVSS:3.1/AV:A/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L
6.4NIST NVDCVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:L/I:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-362Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')

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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