Important: kernel security, bug fix, and enhancement update

Related Vulnerabilities: CVE-2022-4744  

Synopsis

Important: kernel security, bug fix, and enhancement update

Type/Severity

Security Advisory: Important

Red Hat Insights patch analysis

Identify and remediate systems affected by this advisory.

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Topic

An update for kernel is now available for Red Hat Enterprise Linux 9.0 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: tun: avoid double free in tun_free_netdev (CVE-2022-4744)

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):

  • RHEL 9.1 Extending NMI watchdog's timer during LPM (BZ#2140086)
  • RHEL9.1 Rainer 2gb/4GB LMB: kdump is not working with 2GB/4GB LMB size[FW1030]. (BZ#2151867)
  • RHEL9.0 - s390/kexec: fix ipl report address for kdump (BZ#2166904)
  • Azure RHEL-9 RMB MANA: RMB Patch To Backport On The Azure Linux Images (BZ#2172876)

Enhancement(s):

  • IBM 9.2 FEAT Upgrade the QETH driver to the latest from upstream, e.g. kernel 6.0 (BZ#2166305)

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

  • Red Hat Enterprise Linux for x86_64 - Extended Update Support 9.0 x86_64
  • Red Hat Enterprise Linux for IBM z Systems - Extended Update Support 9.0 s390x
  • Red Hat Enterprise Linux for Power, little endian - Extended Update Support 9.0 ppc64le
  • Red Hat Enterprise Linux for ARM 64 - Extended Update Support 9.0 aarch64
  • Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 9.0 ppc64le
  • Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 9.0 x86_64
  • Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support 9.0 x86_64
  • Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support 9.0 ppc64le
  • Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support 9.0 s390x
  • Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support 9.0 aarch64
  • Red Hat Enterprise Linux Server for ARM 64 - 4 years of updates 9.0 aarch64
  • Red Hat Enterprise Linux Server for IBM z Systems - 4 years of updates 9.0 s390x

Fixes

  • BZ - 2156322 - CVE-2022-4744 kernel: tun: avoid double free in tun_free_netdev