RHSA-2026:24934HighCVSS 7.5

Red Hat Security Advisory: bind9.18 security update

Published
June 11, 2026
Last Modified
August 24, 2026

🔗 CVE IDs covered (1)

CVE-2026-1519 →

📋 Description

CVE-2026-1519 — bind: BIND: Denial of Service via maliciously crafted DNSSEC-validated zone

🎯 Affected products75

  • Red Hat CodeReady Linux Builder EUS (v.9.6)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-32:9.18.29-4.el9_6.3.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-chroot-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-chroot-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-chroot-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-chroot-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debuginfo-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind9.18-debugsource-32:9.18.29-4.el9_6.3.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind9.18-devel-32:9.18.29-4.el9_6.3.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • +45 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: To mitigate this issue, disable DNSSEC validation on affected BIND resolvers. Alternatively, configure the BIND server as authoritative-only if recursive queries are not required. Disabling DNSSEC validation may reduce the security posture of the DNS resolver. A restart of the BIND service (`named`) is required for these changes to take effect and may temporarily interrupt DNS resolution.

🔗 References (4)