RHSA-2026:88455: Critical severity Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support vulnerability
Published Oct 22, 2026
·Updated
Critical: ca-certificates security update
Affected Software
16 affected components
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for x86_64 - 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 IBM z Systems
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Event History
Oct 22, 2026
Advisory Published
via Red Hat·10:16 PM
Data Sourced
via Red Hat·10:16 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which systems are in scope for this update?
The advisory applies to listed Red Hat Enterprise Linux deployments on ARM 64, IBM z Systems, x86_64, and Power little-endian, including certain 4-year support, 4-year updates, Extended Update Support, and Extended Life Cycle offerings.
2
What should teams prioritize when responding?
Treat this as a critical security update for the ca-certificates package and prioritize applying the vendor-provided update to affected supported systems.