Deadlock Affecting kernel-rt-debug package, versions <0:4.18.0-425.19.2.rt7.230.el8_7
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Test your applications- Snyk ID SNYK-CENTOS8-KERNELRTDEBUG-3153233
- published 2 Dec 2022
- disclosed 23 Sep 2022
Introduced: 23 Sep 2022
CVE-2022-4269 Open this link in a new tabHow to fix?
Upgrade Centos:8 kernel-rt-debug to version 0:4.18.0-425.19.2.rt7.230.el8_7 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream kernel-rt-debug package and not the kernel-rt-debug package as distributed by Centos.
See How to fix? for Centos:8 relevant fixed versions and status.
A flaw was found in the Linux kernel Traffic Control (TC) subsystem. Using a specific networking configuration (redirecting egress packets to ingress using TC action "mirred") a local unprivileged user could trigger a CPU soft lockup (ABBA deadlock) when the transport protocol in use (TCP or SCTP) does a retransmission, resulting in a denial of service condition.
References
- https://access.redhat.com/security/cve/CVE-2022-4269
- https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti@redhat.com/
- https://lists.debian.org/debian-lts-announce/2023/10/msg00027.html
- https://lore.kernel.org/netdev/33dc43f587ec1388ba456b4915c75f02a8aae226.1663945716.git.dcaratti%40redhat.com/
- https://security.netapp.com/advisory/ntap-20230929-0001/
- https://www.debian.org/security/2023/dsa-5480