RHSA-2026:91565: High severity Red Hat Red Hat CodeReady Linux Builder for ARM 64 vulnerability
Published Oct 28, 2026
·Updated
Important: kernel security, bug fix, and enhancement update
Affected Software
25 affected components
Red Hat Red Hat CodeReady Linux Builder for ARM 64
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux Hidden Content for x86_64
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat CodeReady Linux Builder for x86_64
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for Power, little endian
Event History
Oct 28, 2026
Advisory Published
via Red Hat·02:29 AM
Data Sourced
via Red Hat·02:29 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which systems are in scope for this update?
The update applies to listed Red Hat Enterprise Linux deployments on x86_64, ARM 64, and IBM z Systems, including certain 4-year update and ARM 64 Extended Update Support channels. It also includes Red Hat CodeReady Linux Builder for ARM 64 and IBM z Systems.
2
What kind of changes does this advisory deliver?
It is an Important-severity kernel update that includes security fixes, bug fixes, and enhancements. The supplied information does not identify the individual vulnerabilities or affected kernel versions.