Skip to content
OpenAdvisories
High RHSA-2026:94011 5 CVEs

Red Hat Security Advisory: bind9.16 security update

Published Nov 13, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 20

ReleasePackageFixed in
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-chroot 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-debugsource 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-dnssec-utils 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-dnssec-utils-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-libs 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-libs-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-license 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-utils 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream bind9.16-utils-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::appstream python3-bind9.16 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-debugsource 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-devel 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-dnssec-utils-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-doc 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-libs 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-libs-debuginfo 32:9.16.23-0.22.el8_10.21
Red Hat · RHEL 8 enterprise_linux:8::crb bind9.16-utils-debuginfo 32:9.16.23-0.22.el8_10.21

Vulnerabilities 5

  • High 8.1
    CVE-2026-94300 Public exploit

    Concurrent GSS-TSIG messages corrupt memory

    Replaying GSS-TSIG signed UDP messages can result in memory corruption in "`named`". An attacker who can capture a previously signed UDP message can replay it while the negotiated TSIG key is still valid. By also sending crafted queries to a zone the attacker…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-19630

    Amplified resource exhaustion in inbound message processing

    In a BIND resolver, inbound DNS protocol messages with a particular structure will result in additional processing, with no limit imposed by BIND. A DNS message with a maliciously large number of such structures will cause BIND to consume disproportionate amo…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-96888

    Named may terminate unexpectedly when a redirect zone is used with strict QNAME minimization

    A BIND resolver that is configured with both a "redirect" zone and "qname-minimization strict" may abort with an assertion failure while processing the redirect. This issue affects BIND 9 versions 9.16.0 through 9.18.50, 9.20.0 through 9.20.29, 9.21.0 through…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine Wolfi
  • High 7.5
    CVE-2026-97313

    Specific RPZ configurations and query patterns may result in an unexpected exit

    A recursive BIND server that receives a query with recursion desired (RD=1) followed by a non-recursive query (RD=0) may exit with an assertion failure, resulting in a denial of service. To be vulnerable, the BIND server must allow recursive queries and have …

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine Wolfi
  • Medium 5.9
    CVE-2026-19662

    qpcache NOQNAME proof use-after-free crashes recursive resolver

    An attacker may be able to cause a `named` resolver to abort. The attack requires inducing the victim resolver to send multiple queries for a DNSSEC-signed zone hosted by an authoritative server under the control of the attacker. If the auth responds with a p…

    ISC BIND 9 bind9 bind9 Debian Ubuntu Azure Linux Alpine Wolfi

References

  • article
    https://access.redhat.com/security/updates/classification/#important
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2535445
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2556406
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2556407
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2556413
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2556415
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_94011.json
  • report
    https://access.redhat.com/security/cve/CVE-2026-19630
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-19630
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-19630
  • article
    https://kb.isc.org/docs/cve-2026-19630
  • report
    https://access.redhat.com/security/cve/CVE-2026-19662
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-19662
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-19662
  • article
    https://downloads.isc.org/isc/bind9/9.20.29
  • article
    https://kb.isc.org/docs/cve-2026-19662
  • report
    https://access.redhat.com/security/cve/CVE-2026-94300
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-94300
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-94300
  • article
    https://kb.isc.org/docs/cve-2026-94300
  • report
    https://access.redhat.com/security/cve/CVE-2026-96888
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-96888
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-96888
  • article
    https://kb.isc.org/docs/cve-2026-96888
  • report
    https://access.redhat.com/security/cve/CVE-2026-97313
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-97313
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-97313
  • article
    https://kb.isc.org/docs/cve-2026-97313