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High ALSA-2026:93925 3 CVEs

Important: bind security, bug fix, and enhancement update

Published Nov 2, 2026 · Updated Nov 3, 2026

Ecosystem: AlmaLinux

Summary

The Berkeley Internet Name Domain (BIND) is an implementation of the Domain Name System (DNS) protocols. BIND includes a DNS server (named); a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating correctly.

Security Fix(es):

* bind9: bind: BIND 9: Denial of Service via crafted DNSSEC responses (CVE-2026-19662)
* bind: BIND: Denial of Service via unbounded processing of crafted DNS messages (CVE-2026-19630)
* bind: bind: Arbitrary code execution via GSS-TSIG UDP message replay (CVE-2026-94300)

Bug Fix(es) and Enhancement(s):

* random named crashes on different AlmaLinux 8.10 resolvers after of installing bind-9.11.36-16.el8_10.14 (RHSA-2026:54654) (JIRA:RHEL-257162)

For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.

Fixed packages 17

ReleasePackageFixed in
AlmaLinux · 8 bind 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-chroot 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-devel 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-export-devel 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-export-libs 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-libs 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-libs-lite 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-license 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-lite-devel 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-pkcs11 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-pkcs11-devel 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-pkcs11-libs 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-pkcs11-utils 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-sdb 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-sdb-chroot 32:9.11.36-18.el8_10
AlmaLinux · 8 bind-utils 32:9.11.36-18.el8_10
AlmaLinux · 8 python3-bind 32:9.11.36-18.el8_10

Vulnerabilities 3

  • 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
  • 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

  • report
    https://access.redhat.com/security/cve/CVE-2026-19630
  • report
    https://access.redhat.com/security/cve/CVE-2026-19662
  • report
    https://access.redhat.com/security/cve/CVE-2026-94300
  • report
    https://bugzilla.redhat.com/2535445
  • report
    https://bugzilla.redhat.com/2556406
  • report
    https://bugzilla.redhat.com/2556407
  • advisory
    https://errata.almalinux.org/8/ALSA-2026-93925.html