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High ELSA-2025-11849 1 CVE

Important: unbound security update (Oracle Linux 9)

Published Jul 28, 2025 · Updated Jul 28, 2025

Ecosystem: Oracle Linux

Summary

[1.16.2-19.1]
- Fix RebirthDay Attack (CVE-2025-5994)
- Resolves: RHEL-104128

Fixed packages 5

ReleasePackageFixed in
Oracle Linux · 9 python3-unbound 0:1.16.2-19.el9_6.1
Oracle Linux · 9 unbound 0:1.16.2-19.el9_6.1
Oracle Linux · 9 unbound-devel 0:1.16.2-19.el9_6.1
Oracle Linux · 9 unbound-dracut 0:1.16.2-19.el9_6.1
Oracle Linux · 9 unbound-libs 0:1.16.2-19.el9_6.1

Vulnerabilities 1

  • High 8.7
    CVE-2025-5994

    Cache poisoning via the ECS-enabled Rebirthday Attack

    A multi-vendor cache poisoning vulnerability named 'Rebirthday Attack' has been discovered in caching resolvers that support EDNS Client Subnet (ECS). Unbound is also vulnerable when compiled with ECS support, i.e., '--enable-subnet', AND configured to send E…

    NLnet Labs Unbound unbound unbound Debian Ubuntu Alpine