RHSA-2026:53402: Important: ldns security update

Published Aug 11, 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

53 affected componentsFixes available
Red Hat Red Hat Enterprise Linux for ARM 64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for x86_64 - 4 years of updates
Red Hat Red Hat Enterprise Linux for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - 4 years of support
Red Hat Red Hat Enterprise Linux for x86_64 - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for IBM z Systems - Extended Update Support
Red Hat Red Hat Enterprise Linux for ARM 64 - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for x86_64 - Extended Update Support
Red Hat Red Hat Enterprise Linux for IBM z Systems - 4 years of updates
Red Hat Red Hat CodeReady Linux Builder for Power, little endian - Extended Update Support
Red Hat Red Hat Enterprise Linux for Power, little endian - Extended Update Support
Red Hat Red Hat CodeReady Linux Builder for ARM 64 - Extended Update Support
redhat/ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debugsource<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debugsource<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-debugsource<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns-debuginfo<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/ldns-debuginfo<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/ldns-debugsource<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/ldns-utils-debuginfo<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/perl-ldns-debuginfo<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/python3-ldns-debuginfo<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/ldns-devel<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-doc<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-devel<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-devel<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-utils<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/perl-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/python3-ldns<1.8.3-18.el10_0.1
1.8.3-18.el10_0.1
redhat/ldns-devel<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/ldns-utils<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/perl-ldns<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.aa
redhat/python3-ldns<1.8.3-18.el10_0.1.aa
1.8.3-18.el10_0.1.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 1.8.3-18.el10_0.1
  2. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  3. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  4. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  5. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  6. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  7. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  8. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  9. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  10. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  11. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  12. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  13. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  14. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  15. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  16. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  17. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1
  18. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  19. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  20. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  21. Upgrade

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

    Fixed in 1.8.3-18.el10_0.1.aa
  22. Upgrade

    Upgrade ldns to a version that resolves this vulnerability.

    Patch CVE-2026-10846

Event History

Aug 11, 2026
Advisory Published
via Red Hat·12:00 AM
Data Sourced
via Red Hat·12:00 AM
RemedyDescriptionAffected Software
Advisory Published
via Red Hat·10:48 AM
Data Sourced
via Red Hat·10:48 AM
Severity
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Frequently Asked Questions

1

What is the severity of RHSA-2026:53402?

The severity of RHSA-2026:53402 is categorized as high with a score of 7.

2

How do I fix RHSA-2026:53402?

To fix RHSA-2026:53402, you need to update the affected ldns packages to the latest version provided by Red Hat.

3

What does the RHSA-2026:53402 vulnerability affect?

RHSA-2026:53402 affects the ldns library used for DNS programming in C.

4

What types of packages are included in RHSA-2026:53402?

RHSA-2026:53402 includes updates for ldns, ldns-debuginfo, ldns-devel, and ldns-utils packages among others.

5

Why is it important to address RHSA-2026:53402?

Addressing RHSA-2026:53402 is important because it resolves security vulnerabilities that could potentially be exploited in DNS operations.

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