RHSA-2021:2106: Red Hat Security Advisory: kernel security and bug fix update

An update for kernel 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.The kernel packages contain the Linux kernel, the core of any Linux operating system. 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: 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. Bug Fix(es):
• [Regression] RHEL8.2 - ISST-LTE:pVM:diapvmlp83:sum:memory DLPAR fails to add memory on multiple trials[mm/memory_hotplug.c:1163] (mm-) (BZ#1930170)
• RHEL8.3 - Include patch: powerpc/pci: Remove LSI mappings on device teardown (xive/pci) (BZ#1931926)
• [HPEMC 8.1 REGRESSION] skx_uncore: probe of 0008:80:08.0 failed with error -22 (BZ#1947115)
• [Azure][RHEL-8]Mellanox Patches To Prevent Kernel Hang In MLX4 (BZ#1952072)
• [HPEMC 8.4 REGRESSION]: perf/x86/intel/uncore kernel panic vulnerability on Haswell and Broadwell servers (BZ#1956686) Related CVEs:
• CVE-2020-0466: kernel: use after free in eventpoll.c may lead to escalation of privilege
• CVE-2020-12362: kernel: Integer overflow in Intel® Graphics Drivers
• 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