Issued:

2022-06-28

Updated:

2022-06-28

RHSA-2022:5344 - Important: kernel-rt security and bug fix update

Synopsis

Important: kernel-rt security and bug fix update

Type/Severity

Security Advisory Important

Topic

An update for kernel-rt is now available for Red Hat Enterprise Linux 8.

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-rt packages provide the Real Time Linux Kernel, which enables fine-tuning for systems with extremely high determinism requirements.

Security Fix(es):

• kernel: buffer overflow in IPsec ESP transformation code (CVE-2022-27666)

• kernel: out-of-bounds read in fbcon_get_font function (CVE-2020-28915)

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):

• kernel-rt: update RT source tree to the latest RHEL-8.6.z0 Batch (BZ#2081704)

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

Updated Packages

• kernel-rt-devel-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-kvm-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-core-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debuginfo-common-x86_64-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-modules-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-modules-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-debuginfo-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debuginfo-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-core-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-modules-extra-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-modules-extra-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-devel-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-debug-kvm-4.18.0-372.13.1.rt7.170.el8_6.x86_64.rpm
• kernel-rt-4.18.0-372.13.1.rt7.170.el8_6.src.rpm

Fixes

• This content is not included.BZ - 1899177
• This content is not included.BZ - 2061633

CVEs

• CVE-2020-28915
• CVE-2022-27666

References

• https://access.redhat.com/security/updates/classification/#important

Additional information

• The Red Hat security contact is This content is not included.secalert@redhat.com. More contact details at https://access.redhat.com/security/team/contact/.
• Offline Security Data data is available for integration with other systems. See Offline Security Data API to get started.