RHSA-2022:0819: Important: kernel-rt security and bug fix update

First published: Thu Mar 10 2022(Updated: )

The kernel-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.<br>Security Fix(es):<br><li> kernel: improper initialization of the "flags" member of the new pipe_buffer (CVE-2022-0847)</li> <li> kernel: Use After Free in unix_gc() which could result in a local privilege escalation (CVE-2021-0920)</li> <li> kernel: local privilege escalation by exploiting the fsconfig syscall parameter leads to container breakout (CVE-2021-4154)</li> <li> kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)</li> <li> kernel: remote stack overflow via kernel panic on systems using TIPC may lead to DoS (CVE-2022-0435)</li> <li> kernel: cgroups v1 release_agent feature may allow privilege escalation (CVE-2022-0492)</li> <li> kernel: failing usercopy allows for use-after-free exploitation (CVE-2022-22942)</li> 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.<br>Bug Fix(es):<br><li> kernel symbol '__rt_mutex_init' is exported GPL-only in kernel 4.18.0-348.2.1.rt7.132.el8_5 (BZ#2038423)</li> <li> kernel-rt: update RT source tree to the RHEL-8.5.z3 source tree (BZ#2045589)</li>

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