Product Errata

RLSA-2021:3440

Moderate: kernel-rt security and bug fix update

Topic

An update is available for kernel-rt.

This update affects Rocky Linux 8.

A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE list

Description

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: slab-out-of-bounds access in xdr_set_page_base() in net/sunrpc/xdr.c (CVE-2021-38201)

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):

* OSLAT spikes on subset of cpus (BZ#1986063)

* kernel-rt: update RT source tree to the Rocky Linux-8.4.z source tree (BZ#1990013)

* Failure to enter full_nohz due to needless SCHED softirqs (BZ#1990272)

* kernel-rt: Make rcu_normal_after_boot writable (BZ#1995431)

Issued: 9/7/2021

Type: Security

Severity: Moderate

Affected Product

  • Rocky Linux 8

References

  • No references