RHSA-2026:20357MediumCVSS 7.5

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published
May 23, 2026
Last Modified
August 24, 2026

🔗 CVE IDs covered (4)

CVE-2026-42923 →CVE-2026-42960 →CVE-2026-32792 →CVE-2026-40622 →

📋 Description

CVE-2026-32792 — unbound: Packet of death with DNSCrypt CVE-2026-40622 — unbound: Unbound: Cache manipulation via 'ghost domain names' attack CVE-2026-42923 — unbound: Unbound DNSSEC Validator NSEC3 Hash Calculation Limit Bypass via Negative Cache Code Path Leading to DoS CVE-2026-42960 — unbound: Unbound DNS Cache Poisoning via Promiscuous Additional Section RRSet Acceptance

🎯 Affected products5

  • Red Hat Hardened Images
  • unbound-main@aarch64 as a component of Red Hat Hardened Images
  • unbound-main@noarch as a component of Red Hat Hardened Images
  • unbound-main@src as a component of Red Hat Hardened Images
  • unbound-main@x86_64 as a component of Red Hat Hardened Images

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://images.redhat.com/ Workaround: Mitigation for this issue is either not available or the currently available options do not meet the Red Hat Product Security criteria comprising ease of use and deployment, applicability to widespread installation base, or stability.

🔗 References (8)