RHSA-2022:0821: 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.<br>Security Fix(es):<br><li> kernel: improper initialization of the "flags" member of the new pipebuffer (CVE-2022-0847)</li> <li> kernel: fget: check that the fd still exists after getting a ref to it (CVE-2021-4083)</li> <li> kernel: possible privileges escalation due to missing TLB flush (CVE-2022-0330)</li> <li> kernel: cgroups v1 releaseagent 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-rt: update RT source tree to the latest RHEL-8.2.z16 Batch (BZ#2057698)</li>
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:0821?
The severity of RHSA-2022:0821 is classified as important due to vulnerabilities that could lead to potential security risks.
How do I fix RHSA-2022:0821?
To fix RHSA-2022:0821, you should update the kernel-rt packages to version 4.18.0-193.79.1.rt13.129.el8_2 or later.
What vulnerabilities are addressed in RHSA-2022:0821?
RHSA-2022:0821 addresses vulnerabilities including improper initialization of the 'flags' member of the new pipe_buffer identified as CVE-2022-0847.
Which packages are affected by RHSA-2022:0821?
Affected packages include kernel-rt, kernel-rt-core, and other related kernel-rt packages for Red Hat Enterprise Linux.
Is RHSA-2022:0821 applicable to all systems?
RHSA-2022:0821 is specifically applicable to systems running the Real Time Linux Kernel version 4.18.0-193.79.1.rt13.129.el8_2 and below.