RHSA-2021:2190: Red Hat Security Advisory: kernel-rt security and bug fix update

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.2 Extended Update Support. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.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® 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) Related CVEs:
• CVE-2020-0466: kernel: use after free in eventpoll.c may lead to escalation of privilege
• CVE-2020-12114: kernel: DoS by corrupting mountpoint reference counter
• CVE-2020-12362: kernel: Integer overflow in Intel® Graphics Drivers
• CVE-2020-28374: kernel: SCSI target (LIO) write to any block on ILO backstore