Important: kernel security and bug fix update

Related Vulnerabilities: CVE-2022-4139   CVE-2022-26373  

Synopsis

Important: kernel security and bug fix update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

View affected systems

Topic

An update for kernel is now available for Red Hat Enterprise Linux 8.6 Extended Update Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

The kernel packages contain the Linux kernel, the core of any Linux operating system.

Security Fix(es):

  • kernel: i915: Incorrect GPU TLB flush can lead to random memory access (CVE-2022-4139)
  • hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions (CVE-2022-26373)

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):

  • Azure: Sometimes newly deployed VMs are not getting accelerated network during provisioning (BZ#2155273)
  • Azure: VM Deployment Failures Patch Request (BZ#2155281)

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

The system must be rebooted for this update to take effect.

Affected Products

Fixes

  • BZ - 2115065 - CVE-2022-26373 hw: cpu: Intel: Post-barrier Return Stack Buffer Predictions
  • BZ - 2147572 - CVE-2022-4139 kernel: i915: Incorrect GPU TLB flush can lead to random memory access