RHSA-2022:5939: Moderate: 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> Incomplete cleanup of multi-core shared buffers (aka SBDR) (CVE-2022-21123)</li> <li> Incomplete cleanup of microarchitectural fill buffers (aka SBDS) (CVE-2022-21125)</li> <li> Incomplete cleanup in specific special register write operations (aka DRPW) (CVE-2022-21166)</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> The kernel-rt crashes where one task is indefinitely looping in startcfsbandwidth() with the cfsb->lock spinlock being held (BZ#2079976)</li> <li> update to the latest RHEL7.9.z16 source tree (BZ#2100182)</li>
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:5939?
The severity of RHSA-2022:5939 is classified as critical due to incomplete cleanup vulnerabilities.
How do I fix RHSA-2022:5939?
To fix RHSA-2022:5939, you should update the kernel-rt packages to version 3.10.0-1160.76.1.rt56.1220.el7.
What vulnerabilities are addressed in RHSA-2022:5939?
RHSA-2022:5939 addresses multiple vulnerabilities, including CVE-2022-21123 related to incomplete cleanup of multi-core shared buffers.
Which packages are affected by RHSA-2022:5939?
The affected packages include various kernel-rt and kernel-rt-debug packages up to version 3.10.0-1160.76.1.rt56.1220.el7.
What type of systems are impacted by RHSA-2022:5939?
RHSA-2022:5939 impacts systems utilizing the Real Time Linux Kernel, which require high determinism and performance.