RHSA-2026:54377: Important: ldns security update

Published Aug 12, 2026
·
Updated

Important: ldns security update

Other sources

The ldns packages contain a library with the aim to simplify DNS programming in C. All low-level DNS/DNSSEC operations are supported. We also define a higher level API which allows a programmer to (for instance) create or sign packets.Security Fix(es): ldns: ldns: Off-path poisoning attacks due to insufficient query-response matching (CVE-2026-10846) 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.

— Red Hat

Affected Software

33 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for x86_64 - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Server for Power LE - Update Services for SAP Solutions
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Life Cycle
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Life Cycle
Red Hat Red Hat Enterprise Linux Server - AUS
redhat/ldns<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debugsource<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debugsource<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-utils-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-utils-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/perl-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/perl-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/python3-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/python3-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-debugsource<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns-utils-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/perl-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/python3-ldns-debuginfo<1.7.1-11.el9_2.1
1.7.1-11.el9_2.1
redhat/ldns<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa
redhat/ldns-debuginfo<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa
redhat/ldns-debugsource<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa
redhat/ldns-utils-debuginfo<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa
redhat/perl-ldns-debuginfo<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa
redhat/python3-ldns-debuginfo<1.7.1-11.el9_2.1.aa
1.7.1-11.el9_2.1.aa

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade redhat/ldns to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  2. Upgrade

    Upgrade redhat/ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  3. Upgrade

    Upgrade redhat/ldns-debugsource to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  4. Upgrade

    Upgrade redhat/ldns-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  5. Upgrade

    Upgrade redhat/perl-ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  6. Upgrade

    Upgrade redhat/python3-ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1
  7. Upgrade

    Upgrade redhat/ldns to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  8. Upgrade

    Upgrade redhat/ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  9. Upgrade

    Upgrade redhat/ldns-debugsource to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  10. Upgrade

    Upgrade redhat/ldns-utils-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  11. Upgrade

    Upgrade redhat/perl-ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  12. Upgrade

    Upgrade redhat/python3-ldns-debuginfo to a version that resolves this vulnerability.

    Fixed in 1.7.1-11.el9_2.1.aa
  13. Upgrade

    Upgrade ldns to a version that resolves this vulnerability.

    Patch CVE-2026-10846

Event History

Aug 12, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·01:53 PM
Data Sourced
via Red Hat·01:53 PM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:54377?

The severity of RHSA-2026:54377 is classified as high with a score of 7.

2

What does the ldns security update in RHSA-2026:54377 address?

The ldns security update in RHSA-2026:54377 addresses vulnerabilities in the ldns library that supports DNS programming in C.

3

How do I fix RHSA-2026:54377?

To fix RHSA-2026:54377, update the ldns packages to the latest version provided by Red Hat.

4

Which systems are affected by RHSA-2026:54377?

RHSA-2026:54377 affects Red Hat Enterprise Linux for x86_64 and IBM z Systems.

5

Is there a known issue associated with RHSA-2026:54377?

Yes, there are known issues associated with RHSA-2026:54377, as detailed in Bugzilla Red Hat report 2487437.

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