RHSA-2026:18786HighCVSS 7.5

Red Hat Security Advisory: bind security update

Published
May 19, 2026
Last Modified
September 1, 2026

🔗 CVE IDs covered (1)

CVE-2025-8677 →

📋 Description

CVE-2025-8677 — bind: Resource exhaustion via malformed DNSKEY handling

🎯 Affected products78

  • Red Hat Enterprise Linux AppStream (v. 9)
  • Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-32:9.16.23-40.el9_8.1.src as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-chroot-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-chroot-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-chroot-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-chroot-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debuginfo-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.i686 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.ppc64le as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.s390x as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux AppStream (v. 9)
  • bind-debugsource-32:9.16.23-40.el9_8.1.x86_64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • bind-devel-32:9.16.23-40.el9_8.1.aarch64 as a component of Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)
  • +48 more not shown

✅ Remediation

For details on how to apply this update, which includes the changes described in this advisory, refer to: https://access.redhat.com/articles/11258 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. To reduce risk, restrict recursive queries to trusted or internal networks only, and apply rate limiting or firewall rules to prevent excessive or repetitive requests. Enabling DNSSEC validation helps reject forged records, while isolating recursive resolvers from authoritative servers limits the impact of potential cache poisoning. Active monitoring of CPU usage, query volume, and cache anomalies can provide early warning of abuse or attacks.

🔗 References (6)