RHSA-2026:80674: High severity Red Hat Red Hat Enterprise Linux for IBM z Systems vulnerability
Published Oct 12, 2026
·Updated
Important: thunderbird security update
Affected Software
16 affected components
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
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 ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
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 IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Event History
Oct 12, 2026
Advisory Published
via Red Hat·08:50 AM
Data Sourced
via Red Hat·08:50 AM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which environments are covered by this update?
The advisory applies to Red Hat Enterprise Linux deployments on IBM z Systems, x86_64, ARM 64, and little-endian Power, including listed Extended Life Cycle, Extended Update Support, and 4-years-of-updates offerings.
2
How urgent is remediation?
The update is rated Important and has high severity (7), with a listed risk value of 33. Prioritize applying the available Thunderbird security update according to your organization’s patch-management process.