RHSA-2022:7134: 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: a use-after-free in clsroute filter implementation may lead to privilege escalation (CVE-2022-2588) kernel: information leak in scsiioctl() (CVE-2022-0494) Kernel: A kernel-info-leak issue in pfkeyregister (CVE-2022-1353) hw: cpu: AMD: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-23816, CVE-2022-29900) hw: cpu: AMD: Branch Type Confusion (non-retbleed) (CVE-2022-23825) hw: cpu: Intel: RetBleed Arbitrary Speculative Code Execution with Return Instructions (CVE-2022-29901) 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): [rhel8-rt] BUG: using thiscpuadd() in preemptible [00000000] - caller is modmemcglruvecstate+0x69/0x1c0 (BZ#2122600) The latest RHEL 8.6.z4 kernel changes need to be merged into the RT source tree to keep source parity between the two kernels. (BZ#2125396)
Affected Software
Remediation
Event History
Frequently Asked Questions
What is the severity of RHSA-2022:7134?
The severity of RHSA-2022:7134 is classified as critical due to the risk of privilege escalation.
How do I fix RHSA-2022:7134?
To fix RHSA-2022:7134, update your kernel-rt packages to version 4.18.0-372.32.1.rt7.189.el8_6.
Which versions are affected by RHSA-2022:7134?
Versions prior to 4.18.0-372.32.1.rt7.189.el8_6 of the kernel-rt packages are affected by RHSA-2022:7134.
What vulnerability does RHSA-2022:7134 address?
RHSA-2022:7134 addresses a use-after-free vulnerability in the cls_route filter implementation (CVE-2022-2588).
Is RHSA-2022:7134 relevant for all kernel-rt users?
Yes, RHSA-2022:7134 is relevant for all users running affected versions of the kernel-rt packages.