RHSA-2026:81406: High severity Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates vulnerability
Published Oct 12, 2026
·Updated
Important: kernel security, bug fix, and enhancement update
Affected Software
25 affected components
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64
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 Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder 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
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for IBM z Systems
Red Hat Red Hat Enterprise Linux for ARM 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 IBM z Systems
Red Hat Red Hat Enterprise Linux Hidden Content for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
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 Power, little endian
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 12, 2026
Advisory Published
via Red Hat·05:54 PM
Data Sourced
via Red Hat·05:54 PM
DescriptionSeverityAffected Software
Frequently Asked Questions
1
Which deployments are in scope for this update?
The advisory covers selected Red Hat Enterprise Linux offerings for x86_64, IBM z Systems, Power little endian, and CodeReady Linux Builder for ARM 64. The listed support channels include standard, 4 years of updates, Extended Update Support, and Extended Life Cycle offerings, depending on architecture.
2
What information is available to assess exploitability or affected configurations?
The provided advisory data identifies this as an important kernel security, bug-fix, and enhancement update with high severity, but does not provide CVE identifiers, affected package versions, exploit prerequisites, or configuration details. Administrators should consult the referenced erratum for those details before determining exposure.