RHSA-2022:5224: Important: kernel-rt security and bug fix update
The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.Security Fix(es): kernel: Small table perturb size in the TCP source port generation algorithm can lead to information leak (CVE-2022-1012) kernel: race condition in perfeventopen leads to privilege escalation (CVE-2022-1729) kernel: a use-after-free write in the netfilter subsystem can lead to privilege escalation to root (CVE-2022-1966) kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666) kernel: the copy-on-write implementation can grant unintended write access because of a race condition in a THP mapcount check (CVE-2020-29368) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.Bug Fix(es): kernel-rt: update RT source tree to the latest RHEL-8.2.z18 Batch (BZ#2081080)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:5224?
The severity of RHSA-2022:5224 is categorized as important due to the potential for information leaks.
How do I fix RHSA-2022:5224?
To fix RHSA-2022:5224, you should update to kernel-rt package version 4.18.0-193.87.1.rt13.137.el8_2.
What vulnerability does RHSA-2022:5224 address?
RHSA-2022:5224 addresses a vulnerability in the TCP source port generation algorithm which can lead to information leaks.
Which software packages are affected by RHSA-2022:5224?
Affected software packages by RHSA-2022:5224 include kernel-rt and related debug and core packages on Red Hat.
Is there a workaround for RHSA-2022:5224 if I can't update?
Yes, a temporary workaround would be to restrict access to the affected services until an update can be applied.