RHSA-2021:2190: 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: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466) kernel: Integer overflow in Intel(R) Graphics Drivers (CVE-2020-12362) kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374) kernel: DoS by corrupting mountpoint reference counter (CVE-2020-12114) 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.z9 Batch source tree (BZ#1949685)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2021:2190?
The severity of RHSA-2021:2190 is classified as important due to the potential for privilege escalation from a use-after-free vulnerability.
How do I fix RHSA-2021:2190?
To fix RHSA-2021:2190, update the kernel-rt packages to version 4.18.0-193.56.1.rt13.106.el8_2 or higher.
What vulnerabilities are addressed in RHSA-2021:2190?
RHSA-2021:2190 addresses a use-after-free vulnerability in eventpoll.c which may lead to privilege escalation.
Which packages are affected by RHSA-2021:2190?
The packages affected by RHSA-2021:2190 include kernel-rt, kernel-rt-core, kernel-rt-debug, and several others in the kernel-rt family.
Is it necessary to reboot my system after applying RHSA-2021:2190?
Yes, it is recommended to reboot your system after applying the updates related to RHSA-2021:2190 to ensure the vulnerabilities are fully mitigated.