RHSA-2026:58820: Important: resource-agents security update
Important: resource-agents security update
Other sources
The resource-agents packages provide the Pacemaker and RGManager service managers with a set of scripts. These scripts interface with several services to allow operating in a high-availability (HA) environment.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
redhat/resource-agentsto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
redhat/resource-agents-aliyunto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
redhat/resource-agents-aliyun-debuginfoto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
redhat/resource-agents-debuginfoto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
redhat/resource-agents-debugsourceto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
redhat/resource-agents-gcpto a version that resolves this vulnerability.Fixed in 4.1.1-90.el8_4.27 - Upgrade
Upgrade
resource-agents (Pacemaker/RGManager service manager scripts)to a version that resolves this vulnerability.Patch CVE-2026-59886
Event History
Frequently Asked Questions
Which environments are covered by this update?
The update applies to Red Hat Enterprise Linux High Availability for x86_64 under Extended Life Cycle Long Life and Advanced Update Support. Listed packages include resource-agents and the resource-agents-aliyun and resource-agents-gcp variants, along with associated debug packages.
What is the documented security issue addressed by this advisory?
The advisory fixes CVE-2026-59886 in pyasn1, a denial-of-service issue caused by crafted ASN.1 REAL values. The provided information does not specify attack prerequisites, affected default configurations, or mitigations other than applying the security update.