CVE-2022-4129
Vulnerability Summary
Timeline
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.
CVSS Metrics
- v3.1•MEDIUM•Score: 5.5CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
EPSS Trends
Current EPSS score: 0.18%• Percentile: 7%
Techniques & Countermeasures
- CWE-667•Improper Locking
The product does not properly acquire or release a lock on a resource, leading to unexpected resource state changes and behaviors.
Affected Systems
- debian•linux
< 5.10.178-1 | < 6.1.4-1 | < 6.1.4-1 | < 6.1.4-1
- ubuntu•linux
all | < 5.4.0-147.164 | < 5.15.0-70.77
- ubuntu•linux-allwinner-5.19
< 5.19.0-1012.12~22.04.1
- ubuntu•linux-aws
all | < 5.4.0-1100.108 | < 5.15.0-1034.38
- ubuntu•linux-aws-5.0
all
- ubuntu•linux-aws-5.11
all
- ubuntu•linux-aws-5.13
all
- ubuntu•linux-aws-5.15
< 5.15.0-1034.38~20.04.1
- ubuntu•linux-aws-5.3
all
- ubuntu•linux-aws-5.4
< 5.4.0-1100.108~18.04.1
- ubuntu•linux-aws-5.8
all
- ubuntu•linux-aws-fips
all | < 5.4.0-1100.108+fips1
- ubuntu•linux-aws-hwe
all
- ubuntu•linux-azure
all | all | < 5.4.0-1106.112 | < 5.15.0-1036.43
- ubuntu•linux-azure-4.15
all
- ubuntu•linux-azure-5.11
all
- ubuntu•linux-azure-5.13
all
- ubuntu•linux-azure-5.15
< 5.15.0-1036.43~20.04.1
- ubuntu•linux-azure-5.19
< 5.19.0-1026.29~22.04.1
- ubuntu•linux-azure-5.3
all
- ubuntu•linux-azure-5.4
< 5.4.0-1106.112~18.04.1
- ubuntu•linux-azure-5.8
all
- ubuntu•linux-azure-edge
all
- ubuntu•linux-azure-fde
< 5.15.0-1036.43.1
- ubuntu•linux-azure-fips
all | < 5.4.0-1106.112+fips1
- ubuntu•linux-bluefield
all | < 5.4.0-1062.68 | < 5.15.0-1015.17
- ubuntu•linux-fips
all | < 5.4.0-1075.84
- ubuntu•linux-gcp
all | all | < 5.4.0-1103.112 | < 5.15.0-1032.40
- ubuntu•linux-gcp-4.15
all
- ubuntu•linux-gcp-5.11
all
- ubuntu•linux-gcp-5.13
all
- ubuntu•linux-gcp-5.15
< 5.15.0-1032.40~20.04.1
- ubuntu•linux-gcp-5.19
< 5.19.0-1024.26~22.04.1
- ubuntu•linux-gcp-5.3
all
- ubuntu•linux-gcp-5.4
< 5.4.0-1103.112~18.04.1
- ubuntu•linux-gcp-5.8
all
- ubuntu•linux-gcp-fips
all | < 5.4.0-1103.112+fips1
- ubuntu•linux-gke
< 5.4.0-1097.104 | < 5.15.0-1031.36
- ubuntu•linux-gke-4.15
all
- ubuntu•linux-gke-5.15
< 5.15.0-1031.36~20.04.1
- ubuntu•linux-gke-5.4
all
- ubuntu•linux-gkeop
< 5.4.0-1067.71 | < 5.15.0-1018.23
- ubuntu•linux-gkeop-5.15
< 5.15.0-1018.23~20.04.1
- ubuntu•linux-gkeop-5.4
all
- ubuntu•linux-hwe
all | all
- ubuntu•linux-hwe-5.11
all
- ubuntu•linux-hwe-5.13
all
- ubuntu•linux-hwe-5.15
< 5.15.0-70.77~20.04.1
- ubuntu•linux-hwe-5.19
< 5.19.0-42.43~22.04.1
- ubuntu•linux-hwe-5.4
< 5.4.0-147.164~18.04.1
Showing first 50 affected entries in server-rendered view.
References (22)
- https://lore.kernel.org/all/20221114191619.124659-1-jakub%40cloudflare.com/t
- https://lore.kernel.org/netdev/20221121085426.21315-1-jakub%40cloudflare.com/t
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/AM5KFIE6JNZXHBA5A2KYDZAT3MEX2B67/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/7X5SPXMXXFANDASPCKER2JIQO2F3UHCP/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOKXNIM2R4FQCDRQV67UMAY6EBC72QFG/
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- https://ubuntu.com/security/CVE-2022-4129
- https://lore.kernel.org/all/20221114191619.124659-1-jakub@cloudflare.com/t
- https://lore.kernel.org/netdev/20221121085426.21315-1-jakub@cloudflare.com/t
- https://ubuntu.com/security/notices/USN-6025-1
- https://ubuntu.com/security/notices/USN-6027-1
- https://ubuntu.com/security/notices/USN-6040-1
- https://ubuntu.com/security/notices/USN-6057-1
- https://ubuntu.com/security/notices/USN-6079-1
- https://ubuntu.com/security/notices/USN-6091-1
- https://ubuntu.com/security/notices/USN-6093-1
- https://ubuntu.com/security/notices/USN-6096-1
- https://ubuntu.com/security/notices/USN-6134-1
- https://ubuntu.com/security/notices/USN-6222-1
- https://ubuntu.com/security/notices/USN-6256-1
- https://www.cve.org/CVERecord?id=CVE-2022-4129
- https://security-tracker.debian.org/tracker/CVE-2022-4129