RHSA-2026:88477: High severity Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates vulnerability
Published Oct 22, 2026
·Updated
Important: kernel security, bug fix, and enhancement update
Affected Software
25 affected components
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for x86_64
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 Hidden Content for x86_64
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for ARM 64
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for ARM 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 IBM z Systems
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat CodeReady Linux Builder for Power, little endian
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
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 CodeReady Linux Builder for x86_64 - Extended Update Support
Event History
Oct 22, 2026
Advisory Published
via Red Hat·11:53 PM
Data Sourced
via Red Hat·11:53 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which systems are covered by this advisory?
The advisory applies to Red Hat Enterprise Linux deployments on x86_64, ARM 64, IBM z Systems, and Power little endian, including the listed Extended Update Support and four-year support or updates offerings.
2
What type of update is being issued?
This is an important kernel update that includes security fixes, bug fixes, and enhancements. The provided information does not identify the individual vulnerabilities or affected kernel package versions.
3
How urgent is remediation?
The advisory is rated high severity, with a listed risk value of 33. Prioritize applying the applicable kernel update through Red Hat's supported update process.