RHSA-2021:2099: Red Hat Security Advisory: kpatch-patch security update

An update is now available for Red Hat Enterprise Linux 8.1 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.This is a kernel live patch module which is automatically loaded by the RPM post-install script to modify the code of a running kernel. Security Fix(es):

• kernel: use after free in eventpoll.c may lead to escalation of privilege (CVE-2020-0466)
• kernel: SCSI target (LIO) write to any block on ILO backstore (CVE-2020-28374)
• kernel: Use after free via PI futex state (CVE-2021-3347) 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. Related CVEs:
• CVE-2020-0466: kernel: use after free in eventpoll.c may lead to escalation of privilege
• CVE-2020-28374: kernel: SCSI target (LIO) write to any block on ILO backstore
• CVE-2021-3347: kernel: Use after free via PI futex state