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CVE-2022-4129 Details

Description

A flaw was found in the Linux kernel's Layer 2 Tunneling Protocol (L2TP). A missing lock when clearing sk_user_data can lead to a race condition and NULL pointer dereference. A local user could use this flaw to potentially crash the system causing a denial of service.

Metrics

CVSS 3.x Severity and Vector Strings:

NIST: [email protected]CVSS-B:5.5 MEDIUMVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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

References to Advisories, Solutions, and Tools

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URL	Source(s)	Tag(s)
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X5SPXMXXFANDASPCKER2JIQO2F3UHCP/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AM5KFIE6JNZXHBA5A2KYDZAT3MEX2B67/	CVE
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOKXNIM2R4FQCDRQV67UMAY6EBC72QFG/	CVE
https://lore.kernel.org/all/20221114191619.124659-1-jakub%40cloudflare.com/t	CVE
https://lore.kernel.org/netdev/20221121085426.21315-1-jakub%40cloudflare.com/t	CVE
https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X5SPXMXXFANDASPCKER2JIQO2F3UHCP/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AM5KFIE6JNZXHBA5A2KYDZAT3MEX2B67/	[email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOKXNIM2R4FQCDRQV67UMAY6EBC72QFG/	[email protected]
https://lore.kernel.org/all/20221114191619.124659-1-jakub%40cloudflare.com/t	[email protected]
https://lore.kernel.org/netdev/20221121085426.21315-1-jakub%40cloudflare.com/t	[email protected]

see all 12 references

Weakness Enumeration

CWE-ID	CWE Name	Source
CWE-667	Improper Locking	[email protected]
CWE-667	Improper Locking	[email protected]

Affected Products

Product	Versions
linux layer 2 tunneling protocol	< 6.0
CPE cpe:2.3:a:linux:layer_2_tunneling_protocol:::::::: Remediation No remediation found in references.
fedoraproject fedora	35 36 37
CPE cpe:2.3:o:fedoraproject:fedora:35:::::::* cpe:2.3:o:fedoraproject:fedora:36:::::::* cpe:2.3:o:fedoraproject:fedora:37:::::::* Remediation No remediation found in references.

Change History

12 change records found show changes

Date	Action	Recorded By
Jun 17, 2026	CVE Modified	[email protected]
Jun 17, 2026	CVE Modified	CISA-ADP
Apr 14, 2025	CVE Modified	CISA-ADP
Nov 21, 2024	CVE Modified	CVE
May 14, 2024	CVE Modified	[email protected]
Nov 7, 2023	CVE Modified	[email protected]
May 3, 2023	CVE Modified	[email protected]
Feb 12, 2023	CVE Modified	[email protected]
Feb 1, 2023	Modified Analysis	[email protected]
Dec 5, 2022	CVE Modified	[email protected]
Dec 5, 2022	CVE Modified	[email protected]
Dec 1, 2022	Initial Analysis	[email protected]