RHSA-2022:0819: 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: improper initialization of the "flags" member of the new pipebuffer (CVE-2022-0847) kernel: Use After Free in unixgc() which could result in a local privilege escalation (CVE-2021-0920) kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154) kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330) kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435) kernel: cgroups v1 releaseagent feature may allow privilege escalation (CVE-2022-0492) kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942) 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 symbol 'rtmutexinit' is exported GPL-only in kernel 4.18.0-348.2.1.rt7.132.el85 (BZ#2038423) kernel-rt: update RT source tree to the RHEL-8.5.z3 source tree (BZ#2045589)