RHSA-2026:86203: High severity Red Hat Red Hat Enterprise Linux for x86_64 vulnerability

Published Oct 20, 2026

Updated

Important: go-toolset:rhel8 security, bug fix, and enhancement update

Affected Software

8 affected components

Red Hat Red Hat Enterprise Linux for x86_64

Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle

Red Hat Red Hat Enterprise Linux for Power, little endian

Red Hat Red Hat Enterprise Linux for IBM z Systems

Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle

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 IBM z Systems - Extended Life Cycle

Event History

Oct 20, 2026

Advisory Published

via Red Hat·07:58 PM

Data Sourced

via Red Hat·07:58 PM

DescriptionSeverityAffected Software

Frequently Asked Questions

Which systems are covered by this update?

The update applies to Red Hat Enterprise Linux 8 on x86_64, ARM 64, IBM z Systems, and Power little endian. It also covers the corresponding Extended Life Cycle variants listed in the advisory.

Does the available information identify the specific vulnerabilities, affected package versions, or mitigations?

No. The provided information identifies this as an important go-toolset update containing security, bug-fix, and enhancement changes, but does not provide vulnerability identifiers, package versions, exploit prerequisites, or temporary mitigations.

RHSA-2026:86203: High severity Red Hat Red Hat Enterprise Linux for x86_64 vulnerability

Affected Software

Event History

Frequently Asked Questions

Which systems are covered by this update?

Does the available information identify the specific vulnerabilities, affected package versions, or mitigations?

Company

Resources

Contact

Frequently Asked Questions

Which systems are covered by this update?

Does the available information identify the specific vulnerabilities, affected package versions, or mitigations?