SB2026061167 - Fedora 43 update for ldns

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Main Vulnerability Database SB2026061167

SB2026061167 - Fedora 43 update for ldns

Published: June 11, 2026

Security Bulletin ID SB2026061167
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 1
Exploitation vector Remote access
Highest impact Data manipulation

Breakdown by Severity

Medium 100%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 1 vulnerability.


1) Insufficient verification of data authenticity (CVE-ID: CVE-2026-10846)

CWE-ID: CWE-345 - Insufficient Verification of Data Authenticity

CVSSv4: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:U/U:Green


The vulnerability allows a remote attacker to spoof DNS responses and inject arbitrary DNS data.

The vulnerability exists due to improper response validation in the ldns stub resolver when processing UDP DNS responses. A remote attacker can send a spoofed UDP response to spoof DNS responses and inject arbitrary DNS data.

The issue affects ldns when used as a stub resolver over UDP and can be exploited by an off-path adversary that cannot observe the original query.


Remediation

Install update from vendor's website.

References