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High RLSA-2026:1903 1 CVE

Important: fence-agents security update

Published Feb 5, 2026 · Updated Feb 5, 2026

Ecosystem: Rocky Linux

Summary

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 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.

Fixed packages 1

ReleasePackageFixed in
Rocky Linux · 9 fence-agents 0:4.10.0-98.el9_7.5

Vulnerabilities 1

  • High 7.5
    CVE-2026-23490

    pyasn1 has a DoS vulnerability in decoder

    pyasn1 is a generic ASN.1 library for Python. Prior to 0.6.2, a Denial-of-Service issue has been found that leads to memory exhaustion from malformed RELATIVE-OID with excessive continuation octets. This vulnerability is fixed in 0.6.2.

    pyasn1 pyasn1 open-webui katib-earlystopping Debian Ubuntu Wolfi PyPI

References

  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2430472