RHSA-2026:53363: Important: fence-agents security update
Important: fence-agents security update
Other sources
The fence-agents packages provide a collection of scripts for handling remote power management for cluster devices. They allow failed or unreachable nodes to be forcibly restarted and removed from the cluster. Security Fix(es): pyasn1: pyasn1: Denial of Service via crafted ASN.1 REAL values (CVE-2026-59886) For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
— Red Hat
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
pyasn1to a version that resolves this vulnerability.Patch CVE-2026-59886
Event History
Frequently Asked Questions
What is the severity of RHSA-2026:53363?
The severity of RHSA-2026:53363 is high with a CVSS score of 7.
What is the main issue addressed by RHSA-2026:53363?
RHSA-2026:53363 addresses a security vulnerability in fence-agents that can lead to a Denial of Service.
How do I fix RHSA-2026:53363?
To fix RHSA-2026:53363, apply the latest security updates for the fence-agents package.
Which systems are affected by RHSA-2026:53363?
RHSA-2026:53363 affects multiple versions of Red Hat Enterprise Linux across various architectures including x86_64, ARM, and IBM z Systems.
What are fence-agents used for in relation to RHSA-2026:53363?
Fence-agents are used for remote power management of cluster devices, enabling the restart or removal of failed nodes.