Issued:
2025-11-12
Updated:
2025-11-12

RHSA-2025:21111 - Important: bind9.18 security update

Synopsis

Important: bind9.18 security update

Type/Severity

Security Advisory Important

Topic

An update for bind9.18 is now available for Red Hat Enterprise Linux 9.

Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System (CVSS) base score, which gives a detailed severity rating, is available for each vulnerability from the CVE link(s) in the References section.

Description

BIND (Berkeley Internet Name Domain) is an implementation of the DNS (Domain Name System) protocols. BIND includes a DNS server (named), which resolves host names to IP addresses; a resolver library (routines for applications to use when interfacing with DNS); and tools for verifying that the DNS server is operating properly.

Security Fix(es):

  • bind: Cache poisoning attacks with unsolicited RRs (CVE-2025-40778)

  • bind: Cache poisoning due to weak PRNG (CVE-2025-40780)

  • bind: Resource exhaustion via malformed DNSKEY handling (CVE-2025-8677)

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.

Solution

For details on how to apply this update, which includes the changes described in this advisory, refer to:

https://access.redhat.com/articles/11258

Affected Products

ProductVersionArch
Red Hat Enterprise Linux for x86_649x86_64
Red Hat Enterprise Linux for Power, little endian9ppc64le
Red Hat Enterprise Linux for IBM z Systems9s390x
Red Hat Enterprise Linux for ARM 649aarch64
Red Hat CodeReady Linux Builder for x86_649x86_64
Red Hat CodeReady Linux Builder for Power, little endian9ppc64le
Red Hat CodeReady Linux Builder for IBM z Systems9s390x
Red Hat CodeReady Linux Builder for ARM 649aarch64

Updated Packages

  • bind9.18-chroot-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-devel-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-debuginfo-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-libs-debuginfo-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-dnssec-utils-debuginfo-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-libs-debuginfo-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-utils-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-utils-debuginfo-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-libs-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-libs-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-utils-debuginfo-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-devel-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-utils-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-chroot-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-dnssec-utils-debuginfo-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-libs-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-utils-debuginfo-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-libs-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-debugsource-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-devel-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-devel-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-libs-debuginfo-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-utils-debuginfo-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-debugsource-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-debuginfo-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-utils-debuginfo-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-debugsource-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-devel-9.18.29-5.el9_7.2.i686.rpm
  • bind9.18-9.18.29-5.el9_7.2.src.rpm
  • bind9.18-dnssec-utils-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-dnssec-utils-debuginfo-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-debuginfo-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-dnssec-utils-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-debuginfo-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-chroot-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-dnssec-utils-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-dnssec-utils-debuginfo-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-chroot-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-doc-9.18.29-5.el9_7.2.noarch.rpm
  • bind9.18-libs-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-libs-debuginfo-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-utils-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-debugsource-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-utils-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-debugsource-9.18.29-5.el9_7.2.x86_64.rpm
  • bind9.18-libs-debuginfo-9.18.29-5.el9_7.2.aarch64.rpm
  • bind9.18-dnssec-utils-9.18.29-5.el9_7.2.ppc64le.rpm
  • bind9.18-debuginfo-9.18.29-5.el9_7.2.s390x.rpm
  • bind9.18-dnssec-utils-debuginfo-9.18.29-5.el9_7.2.aarch64.rpm

Fixes

CVEs

References

Additional information