RHSA-2026:2758 - Security Advisory

Topic

An update for resource-agents is now available for Red Hat Enterprise Linux 7 Extended Lifecycle Support.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

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 due to memory exhaustion from malformed RELATIVE-OID (CVE-2026-23490)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

• Red Hat Enterprise Linux for SAP Applications for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux for SAP Solutions for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux High Availability for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux Resilient Storage for x86_64 - Extended Life Cycle Support 7 x86_64
• Red Hat Enterprise Linux High Availability for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux Resilient Storage for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux for SAP Applications for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le
• Red Hat Enterprise Linux for SAP Solutions for IBM Power, little endian - Extended Life Cycle Support 7 ppc64le

Fixes

• BZ - 2430472 - CVE-2026-23490 pyasn1: pyasn1: Denial of Service due to memory exhaustion from malformed RELATIVE-OID

CVEs

• CVE-2026-23490

References

• https://access.redhat.com/security/updates/classification/#important