RHSA-2026:91648: Medium severity Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates vulnerability
Published Oct 28, 2026
·Updated
Moderate: kernel security update
Affected Software
12 affected components
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
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 Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Event History
Oct 28, 2026
Advisory Published
via Red Hat·11:30 AM
Data Sourced
via Red Hat·11:30 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which systems are in scope for this update?
The advisory applies to listed Red Hat Enterprise Linux offerings for x86_64, ARM 64, IBM z Systems, and Power little endian, including certain 4-year support, 4-year updates, and Extended Update Support channels. It also includes Red Hat CodeReady Linux Builder for x86_64 under Extended Update Support.
2
What is the reported severity of this update?
This is rated Moderate with a severity value of 4. The provided data does not identify the individual kernel vulnerabilities addressed or their exploit prerequisites.