RHSA-2026:60383HighCVSS 8.6

Red Hat Security Advisory: bind security update

Published
August 26, 2026
Last Modified
September 1, 2026

🔗 CVE IDs covered (7)

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

📋 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-2026-11622 — 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 products102

  • Red Hat Enterprise Linux Server (v. 7 ELS)
  • Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-32:9.11.4-26.P2.el7_9.21.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-32:9.11.4-26.P2.el7_9.21.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-32:9.11.4-26.P2.el7_9.21.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-32:9.11.4-26.P2.el7_9.21.src as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-32:9.11.4-26.P2.el7_9.21.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-chroot-32:9.11.4-26.P2.el7_9.21.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-chroot-32:9.11.4-26.P2.el7_9.21.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-chroot-32:9.11.4-26.P2.el7_9.21.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-chroot-32:9.11.4-26.P2.el7_9.21.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.i686 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc64le as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.s390 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.s390 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.s390x as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.s390x as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.x86_64 as a component of Red Hat Enterprise Linux Server (v. 7 ELS)
  • bind-debuginfo-32:9.11.4-26.P2.el7_9.21.x86_64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-devel-32:9.11.4-26.P2.el7_9.21.i686 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-devel-32:9.11.4-26.P2.el7_9.21.ppc as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-devel-32:9.11.4-26.P2.el7_9.21.ppc64 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-devel-32:9.11.4-26.P2.el7_9.21.ppc64le as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • bind-devel-32:9.11.4-26.P2.el7_9.21.s390 as a component of Red Hat Enterprise Linux Server Optional (v. 7 ELS)
  • +72 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. Workaround: Disclaimer: The following mitigation notes are provided as a courtesy, pending the application of an official patch. This content was generated utilizing AI tools in conjunction with data from cmetaxonomy.org. Customers are advised to independently evaluate and test these temporary mitigations within their own infrastructure. ISC states no workarounds exist. Until patched, restrict the resolver to authorized client networks and deploy separate resolvers per trust zone. Memory hardening and auth controls don't apply — this is a DNS protocol logic error using validly-signed records.

🔗 References (10)