RHSA-2021:0004: 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: Local buffer overflow in ctnetlinkparsetuplefilter in net/netfilter/nfconntracknetlink.c (CVE-2020-25211) 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 RHEL-8.3.z source tree (BZ#1906140)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:0004?
The severity of RHSA-2021:0004 is classified as important.
How do I fix RHSA-2021:0004?
To fix RHSA-2021:0004, update the kernel-rt packages to version 4.18.0-240.10.1.rt7.64.el8_3.
What vulnerabilities are addressed in RHSA-2021:0004?
RHSA-2021:0004 addresses a local buffer overflow in ctnetlink_parse_tuple_filter in net/netfilter/nf_conntrack_netlink.c.
What is the affected software for RHSA-2021:0004?
The affected software includes various kernel-rt packages such as kernel-rt, kernel-rt-core, and kernel-rt-debug for version 4.18.0-240.10.1.rt7.64.el8_3.
Is there a specific Red Hat product affected by RHSA-2021:0004?
Yes, the vulnerability affects the Real Time Linux Kernel in Red Hat Enterprise Linux 8.