RHSA-2026:53363: Important: fence-agents security update
Published Aug 11, 2026
·Updated
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
22 affected components
Red Hat Red Hat Enterprise Linux for x86_64
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Resilient Storage for Power, little endian
Red Hat Red Hat Enterprise Linux Resilient Storage 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 IBM z Systems
Red Hat Red Hat Enterprise Linux High Availability for Power, little endian
Red Hat Red Hat Enterprise Linux for Power, little endian
Red Hat Red Hat Enterprise Linux for ARM 64
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux High Availability for x86_64
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Resilient Storage for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux High Availability for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Resilient Storage for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux High Availability for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Resilient Storage for IBM z Systems
Red Hat Red Hat Enterprise Linux Resilient Storage for x86_64
Red Hat Red Hat Enterprise Linux High Availability for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux High Availability for ARM 64
Red Hat Red Hat Enterprise Linux High Availability for IBM z Systems
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
Aug 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·07:59 AM
Data Sourced
via Red Hat·07:59 AM
Severity