- Issued:
- 2025-11-26
- Updated:
- 2025-11-26
RHSA-2025:22168 - Security Advisory
Synopsis
Important: bind9.16 security update
Type/Severity
Security Advisory: Important
Red Hat Lightspeed patch analysis
Identify and remediate systems affected by this advisory.
Topic
An update for bind9.16 is now available for Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support, Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions, and Red Hat Enterprise Linux 8.6 Telecommunications Update Service.
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
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):
- bind: DNS forwarders - cache poisoning vulnerability (CVE-2021-25220)
- bind: Cache poisoning attacks with unsolicited RRs (CVE-2025-40778)
- bind: Cache poisoning due to weak PRNG (CVE-2025-40780)
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:
Affected Products
- Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6 x86_64
- Red Hat Enterprise Linux Server - AUS 8.6 x86_64
- Red Hat Enterprise Linux Server - TUS 8.6 x86_64
- Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6 ppc64le
- Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6 x86_64
Fixes
- BZ - 2064512 - CVE-2021-25220 bind: DNS forwarders - cache poisoning vulnerability
- BZ - 2405827 - CVE-2025-40778 bind: Cache poisoning attacks with unsolicited RRs
- BZ - 2405829 - CVE-2025-40780 bind: Cache poisoning due to weak PRNG
Note:
More recent versions of these packages may be available.
Click a package name for more details.
Red Hat Enterprise Linux for x86_64 - Extended Update Support Extension 8.6
| SRPM | |
|---|---|
| bind9.16-9.16.23-0.7.el8_6.9.src.rpm | SHA-256: 37934c5303e1e31e347bcf34902ecc110a12ebe8dfd31136f737c62b8a3449a4 |
| x86_64 | |
| bind9.16-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 0bf841ddec87aa9e55c4e5deab503d7220e0b983182c35a4440405fca9298d59 |
| bind9.16-chroot-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 08d7cc8cba424679894511771616ab7ed56d2f0185cf74c861cbfdd2c03ac557 |
| bind9.16-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: a74a0518b425880ba68083f02132c59d52b91330c44fbfb32798869ada95a321 |
| bind9.16-debugsource-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 8e6bea7c81d1eb94762110b3ace811b79eec79bfbce8b3228f258fe215fcbb44 |
| bind9.16-dnssec-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: c9175fa2484ae119ee35bbdf26831b3cac466eb3680a287ba2b2991fd272a1b8 |
| bind9.16-libs-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: b4adfb73151d7d7bddd6b88cb53d336145082f576af036a4b6fb72bdd7f5d6cb |
| bind9.16-libs-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 1c2b7c316e88e5412f1eb074becfa8a37d150e4d7630bcfd1873d564702a00aa |
| bind9.16-license-9.16.23-0.7.el8_6.9.noarch.rpm | SHA-256: cbdf4560e3fbe9dfda366b2c2dc8e2a6adc91b6ebe630bf819346159a5b7fd57 |
| bind9.16-utils-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: eaeba26611c11e597424f144531970acba22c418eeb2d559c4976218d96a2609 |
| bind9.16-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 40fbaccc44de3b436f46698831e92d51fe5db804451b5d2bb0bf982ffd592999 |
Red Hat Enterprise Linux Server - AUS 8.6
| SRPM | |
|---|---|
| bind9.16-9.16.23-0.7.el8_6.9.src.rpm | SHA-256: 37934c5303e1e31e347bcf34902ecc110a12ebe8dfd31136f737c62b8a3449a4 |
| x86_64 | |
| bind9.16-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 0bf841ddec87aa9e55c4e5deab503d7220e0b983182c35a4440405fca9298d59 |
| bind9.16-chroot-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 08d7cc8cba424679894511771616ab7ed56d2f0185cf74c861cbfdd2c03ac557 |
| bind9.16-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: a74a0518b425880ba68083f02132c59d52b91330c44fbfb32798869ada95a321 |
| bind9.16-debugsource-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 8e6bea7c81d1eb94762110b3ace811b79eec79bfbce8b3228f258fe215fcbb44 |
| bind9.16-dnssec-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: c9175fa2484ae119ee35bbdf26831b3cac466eb3680a287ba2b2991fd272a1b8 |
| bind9.16-libs-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: b4adfb73151d7d7bddd6b88cb53d336145082f576af036a4b6fb72bdd7f5d6cb |
| bind9.16-libs-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 1c2b7c316e88e5412f1eb074becfa8a37d150e4d7630bcfd1873d564702a00aa |
| bind9.16-license-9.16.23-0.7.el8_6.9.noarch.rpm | SHA-256: cbdf4560e3fbe9dfda366b2c2dc8e2a6adc91b6ebe630bf819346159a5b7fd57 |
| bind9.16-utils-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: eaeba26611c11e597424f144531970acba22c418eeb2d559c4976218d96a2609 |
| bind9.16-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 40fbaccc44de3b436f46698831e92d51fe5db804451b5d2bb0bf982ffd592999 |
Red Hat Enterprise Linux Server - TUS 8.6
| SRPM | |
|---|---|
| bind9.16-9.16.23-0.7.el8_6.9.src.rpm | SHA-256: 37934c5303e1e31e347bcf34902ecc110a12ebe8dfd31136f737c62b8a3449a4 |
| x86_64 | |
| bind9.16-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 0bf841ddec87aa9e55c4e5deab503d7220e0b983182c35a4440405fca9298d59 |
| bind9.16-chroot-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 08d7cc8cba424679894511771616ab7ed56d2f0185cf74c861cbfdd2c03ac557 |
| bind9.16-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: a74a0518b425880ba68083f02132c59d52b91330c44fbfb32798869ada95a321 |
| bind9.16-debugsource-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 8e6bea7c81d1eb94762110b3ace811b79eec79bfbce8b3228f258fe215fcbb44 |
| bind9.16-dnssec-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: c9175fa2484ae119ee35bbdf26831b3cac466eb3680a287ba2b2991fd272a1b8 |
| bind9.16-libs-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: b4adfb73151d7d7bddd6b88cb53d336145082f576af036a4b6fb72bdd7f5d6cb |
| bind9.16-libs-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 1c2b7c316e88e5412f1eb074becfa8a37d150e4d7630bcfd1873d564702a00aa |
| bind9.16-license-9.16.23-0.7.el8_6.9.noarch.rpm | SHA-256: cbdf4560e3fbe9dfda366b2c2dc8e2a6adc91b6ebe630bf819346159a5b7fd57 |
| bind9.16-utils-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: eaeba26611c11e597424f144531970acba22c418eeb2d559c4976218d96a2609 |
| bind9.16-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 40fbaccc44de3b436f46698831e92d51fe5db804451b5d2bb0bf982ffd592999 |
Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions 8.6
| SRPM | |
|---|---|
| bind9.16-9.16.23-0.7.el8_6.9.src.rpm | SHA-256: 37934c5303e1e31e347bcf34902ecc110a12ebe8dfd31136f737c62b8a3449a4 |
| ppc64le | |
| bind9.16-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: e06b0a4514c81ed22d78d23e0e9b1fc5cc3855dac0b03cfee8bdb9fc1b256faa |
| bind9.16-chroot-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 29708166880d1f506bc8a0ab3837abcc5869d0e01ddfa00e669f1b83a7d08439 |
| bind9.16-debuginfo-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 10185d5fb29e26d39e33c0ccd8d318e0121c2f9bdd3416ee5e19ea12b449b829 |
| bind9.16-debugsource-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: eb052605e7eebb61ddd3c1a7e662b638b67ec7be921b39ea00f2780f099b1a4f |
| bind9.16-dnssec-utils-debuginfo-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: fc3f105f60cb7b127ccb19bf9845fcbc62ce3b4b39aa671c8040e12490042b52 |
| bind9.16-libs-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 64f1fe48fffa6b2ef216043f34ca0f95286a24d8d245946eb11aa1d9deb557f8 |
| bind9.16-libs-debuginfo-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 30b7bba0496248d18ef0b7db2d29469fad9dd97bfba5b84fa1afb75400ab2dc9 |
| bind9.16-license-9.16.23-0.7.el8_6.9.noarch.rpm | SHA-256: cbdf4560e3fbe9dfda366b2c2dc8e2a6adc91b6ebe630bf819346159a5b7fd57 |
| bind9.16-utils-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 33d0e6361846d55d073879cee6f1805392444fe85da0e2564b27252160274ab3 |
| bind9.16-utils-debuginfo-9.16.23-0.7.el8_6.9.ppc64le.rpm | SHA-256: 01635f4c144d2b5aa964fc9a5670d841092758b8765874c7c446a37c5b59989d |
Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions 8.6
| SRPM | |
|---|---|
| bind9.16-9.16.23-0.7.el8_6.9.src.rpm | SHA-256: 37934c5303e1e31e347bcf34902ecc110a12ebe8dfd31136f737c62b8a3449a4 |
| x86_64 | |
| bind9.16-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 0bf841ddec87aa9e55c4e5deab503d7220e0b983182c35a4440405fca9298d59 |
| bind9.16-chroot-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 08d7cc8cba424679894511771616ab7ed56d2f0185cf74c861cbfdd2c03ac557 |
| bind9.16-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: a74a0518b425880ba68083f02132c59d52b91330c44fbfb32798869ada95a321 |
| bind9.16-debugsource-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 8e6bea7c81d1eb94762110b3ace811b79eec79bfbce8b3228f258fe215fcbb44 |
| bind9.16-dnssec-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: c9175fa2484ae119ee35bbdf26831b3cac466eb3680a287ba2b2991fd272a1b8 |
| bind9.16-libs-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: b4adfb73151d7d7bddd6b88cb53d336145082f576af036a4b6fb72bdd7f5d6cb |
| bind9.16-libs-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 1c2b7c316e88e5412f1eb074becfa8a37d150e4d7630bcfd1873d564702a00aa |
| bind9.16-license-9.16.23-0.7.el8_6.9.noarch.rpm | SHA-256: cbdf4560e3fbe9dfda366b2c2dc8e2a6adc91b6ebe630bf819346159a5b7fd57 |
| bind9.16-utils-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: eaeba26611c11e597424f144531970acba22c418eeb2d559c4976218d96a2609 |
| bind9.16-utils-debuginfo-9.16.23-0.7.el8_6.9.x86_64.rpm | SHA-256: 40fbaccc44de3b436f46698831e92d51fe5db804451b5d2bb0bf982ffd592999 |
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