CVE-2022-4129
MEDIUMLinux Layer 2 Tunneling Protocol < 6.0 - Denial of Service via Race Condition in sk_user_data Locking
Title source: llmDescription
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.
References (6)
Core 6
Core References
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AM5KFIE6JNZXHBA5A2KYDZAT3MEX2B67/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X5SPXMXXFANDASPCKER2JIQO2F3UHCP/
Mailing List, Third Party Advisory vendor-advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOKXNIM2R4FQCDRQV67UMAY6EBC72QFG/
Scores
CVSS v3
5.5
EPSS
0.0002
EPSS Percentile
6.1%
Attack Vector
LOCAL
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
no
Technical Impact
partial
Details
CWE
CWE-667
Status
published
Products (4)
fedoraproject/fedora
35
fedoraproject/fedora
36
fedoraproject/fedora
37
linux/layer_2_tunneling_protocol
< 6.0
Published
Nov 28, 2022
Tracked Since
Feb 18, 2026