RHSA-2026:55441HighCVSS 8.6

Red Hat Security Advisory: bind security update

Published
August 17, 2026
Last Modified
August 18, 2026

🔗 CVE IDs covered (8)

CVE-2026-5946 →CVE-2026-10723 →CVE-2026-11331 →CVE-2026-11622 →CVE-2026-11721 →CVE-2026-13204 →CVE-2026-13321 →CVE-2026-3039 →

📋 Description

CVE-2026-3039 — bind: BIND 9 server memory exhaustion during GSS-API TKEY negotiation CVE-2026-5946 — bind: BIND: Denial of Service via specially crafted DNS messages CVE-2026-10723 — bind: bind9: Incorrect acceptance of NSEC3 records CVE-2026-11331 — bind9: bind: Potential wildcard CNAME RPZ policy bypass CVE-2026-11622 — bind: bind9: Potential memory usage beyond configured limits CVE-2026-11721 — bind: bind9: Cache poisoning via label count discrepancy, RRSIG, wildcards CVE-2026-13204 — bind: bind9: Unexpected exit with NSEC and NSEC3 both present CVE-2026-13321 — bind: bind9: DNSSEC Validation Bypass via Out-of-Zone NSEC Next Field

🎯 Affected products78

  • Red Hat CodeReady Linux Builder EUS (v.9.6)
  • Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-32:9.16.23-31.el9_6.4.src as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-chroot-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-chroot-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-chroot-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-chroot-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debuginfo-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.i686 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.ppc64le as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.s390x as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • bind-debugsource-32:9.16.23-31.el9_6.4.x86_64 as a component of Red Hat Enterprise Linux AppStream EUS (v.9.6)
  • bind-devel-32:9.16.23-31.el9_6.4.aarch64 as a component of Red Hat CodeReady Linux Builder EUS (v.9.6)
  • +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. Example: ```bash # Edit /etc/named.conf and remove or comment out lines related to tkey-gssapi-keytab or tkey-gssapi-credential. # For example, remove or comment out: # key "gssapi-key" { # algorithm GSSAPI; # secret "BASE64_ENCODED_KEY"; # }; # # Then reload the named service: systemctl reload named ``` Reloading the `named` service may cause a brief interruption in DNS resolution. 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 (11)