RHSA-2021:3445: 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: out-of-bounds write due to a heap buffer overflow in hidinputchangeresolutionmultipliers() of hid-input.c (CVE-2021-0512) kernel: use-after-free in route4change() in net/sched/clsroute.c (CVE-2021-3715) 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): OSLAT spikes on subset of cpus (BZ#1986064) Failure to enter fullnohz due to needless SCHED softirqs (BZ#1990273) kernel-rt: update RT source tree to the latest RHEL-8.2.z12 Batch source tree (BZ#1997761)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:3445?
The severity of RHSA-2021:3445 is classified as important.
What types of systems are affected by RHSA-2021:3445?
RHSA-2021:3445 affects Real Time Linux Kernel packages, specifically designed for systems requiring high determinism.
How do I fix RHSA-2021:3445?
To fix RHSA-2021:3445, update to the kernel-rt package version 4.18.0-193.65.2.rt13.117.el8_2.
Which packages are impacted by RHSA-2021:3445?
The impacted packages under RHSA-2021:3445 include kernel-rt, kernel-rt-core, kernel-rt-debug, and their related modules.
What is the nature of the vulnerability in RHSA-2021:3445?
The vulnerability in RHSA-2021:3445 is an out-of-bounds write caused by a heap buffer overflow in specific kernel functions.