RHSA-2026:58834: 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 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-aliyunto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-aliyun-debuginfoto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-debuginfoto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-debugsourceto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-gcpto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
redhat/resource-agents-pafto a version that resolves this vulnerability.Fixed in 4.9.0-16.el8_6.24 - Upgrade
Upgrade
resource-agents packages (Pacemaker/RGManager resource scripts)to a version that resolves this vulnerability.Patch CVE-2026-59886
Event History
Frequently Asked Questions
Which systems should be prioritized for this update?
Prioritize Red Hat Enterprise Linux High Availability for x86_64 Extended Life Cycle Long Life deployments that have resource-agents installed, including the resource-agents-aliyun, resource-agents-gcp, and resource-agents-paf variants and associated debug packages.
What does an attacker need to trigger the documented issue?
The denial-of-service issue is associated with crafted ASN.1 REAL values in pyasn1. The provided advisory data does not specify the affected service interface, required access level, or authentication requirements.