CVE-2022-4129: Race Condition
First published: Wed Aug 10 2022(Updated: )
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.
Credit: secalert@redhat.com secalert@redhat.com secalert@redhat.com
| Affected Software | Affected Version | How to fix |
|---|---|---|
| redhat/kernel-rt | <0:4.18.0-477.10.1.rt7.274.el8_8 | 0:4.18.0-477.10.1.rt7.274.el8_8 |
| redhat/kernel | <0:4.18.0-477.10.1.el8_8 | 0:4.18.0-477.10.1.el8_8 |
| redhat/kernel | <0:5.14.0-284.11.1.el9_2 | 0:5.14.0-284.11.1.el9_2 |
| redhat/kernel-rt | <0:5.14.0-284.11.1.rt14.296.el9_2 | 0:5.14.0-284.11.1.rt14.296.el9_2 |
| Linux Layer 2 Tunneling Protocol | <6.0 | |
| Fedoraproject Fedora | =35 | |
| Fedoraproject Fedora | =36 | |
| Fedoraproject Fedora | =37 | |
| debian/linux | 5.10.223-1 5.10.226-1 6.1.115-1 6.1.119-1 6.12.5-1 |
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Reference Links
- https://www.cve.org/CVERecord?id=CVE-2022-4129 https://nvd.nist.gov/vuln/detail/CVE-2022-4129
- https://bugzilla.redhat.com/show_bug.cgi?id=2134528
- https://access.redhat.com/errata/RHSA-2023:2736
- https://access.redhat.com/errata/RHSA-2023:2951
- https://access.redhat.com/errata/RHSA-2023:2458
- https://access.redhat.com/errata/RHSA-2023:2148
- https://access.redhat.com/security/cve/cve-2022-4129
- https://lists.debian.org/debian-lts-announce/2023/05/msg00005.html
- 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/AM5KFIE6JNZXHBA5A2KYDZAT3MEX2B67/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JOKXNIM2R4FQCDRQV67UMAY6EBC72QFG/
- 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://launchpad.net/bugs/cve/CVE-2022-4129
- https://lore.kernel.org/all/20220823101459.211986-1-jakub@cloudflare.com/t
- https://lore.kernel.org/all/20220815130107.149345-1-jakub@cloudflare.com/t
- https://lore.kernel.org/all/20220810102848.282778-1-jakub@cloudflare.com/t
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2134528#c0
- 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://lore.kernel.org/netdev/20221119130317.39158-1-jakub@cloudflare.com/t
- https://bugzilla.redhat.com/show_bug.cgi/show_bug.cgi?id=2145237
- https://access.redhat.com/errata/RHSA-2024:0412
- https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2022-4129
- https://nvd.nist.gov/vuln/detail/CVE-2022-4129
- https://security-tracker.debian.org/tracker/CVE-2022-4129
- https://ubuntu.com/security/CVE-2022-4129
- https://git.kernel.org/linus/b68777d54fac21fc833ec26ea1a2a84f975ab035
- https://git.kernel.org/linus/af295e854a4e3813ffbdef26dbb6a4d6226c3ea1
Parent vulnerabilities
(Appears in the following advisories)
- collector/redhat-cve
- collector/nvd-index
- agent/type
- agent/first-publish-date
- agent/remedy
- collector/launchpad-cve
- source/Launchpad
- agent/severity
- agent/weakness
- collector/redhat-bugzilla
- source/Red Hat
- alias/CVE-2022-4129
- collector/mitre-cve
- source/MITRE
- collector/usn-cve
- source/Ubuntu
- collector/nvd-api
- source/NVD
- agent/software-canonical-lookup
- collector/nvd-cve
- collector/security-tracker-debian
- source/Debian
- agent/author
- agent/last-modified-date
- agent/softwarecombine
- agent/tags
- agent/description
- agent/event
- agent/references
- agent/trending
- package-manager/redhat
- vendor/linux
- canonical/linux layer 2 tunneling protocol
- vendor/fedoraproject
- canonical/fedoraproject fedora
- version/fedoraproject fedora/35
- version/fedoraproject fedora/36
- version/fedoraproject fedora/37
- package-manager/debian