RHSA-2026:91365: High severity Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle vulnerability
Published Oct 27, 2026
·Updated
Important: libX11 security update
Affected Software
16 affected components
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 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 IBM z Systems
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian
Event History
Oct 27, 2026
Advisory Published
via Red Hat·10:24 PM
Data Sourced
via Red Hat·10:24 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which systems are covered by this advisory?
The advisory applies to the listed Red Hat Enterprise Linux offerings for ARM 64, IBM z Systems, Power little endian, and x86_64. It includes specific Extended Life Cycle, Extended Update Support, four-year update, and SAP Solutions update-service variants.
2
Does the available information identify the affected libX11 version or a fixed version?
No. The provided data identifies this as an important libX11 security update but does not include affected package versions or the version containing the fix.
3
What mitigations are available if the update cannot be installed immediately?
The provided data does not specify any mitigations or workarounds. It only identifies the advisory as a security update.