Security update for dnsdist

Announcement ID: SUSE-SU-2026:20995-1
Release Date: 2026-04-02T09:11:51Z
Rating: low
References:
Cross-References:
CVSS scores:
  • CVE-2025-30187 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  • CVE-2025-30187 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2025-30187 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:L
  • CVE-2025-8671 ( SUSE ): 8.7 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  • CVE-2025-8671 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2025-8671 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Affected Products:
  • SUSE Linux Enterprise Server - BCI 16.0

An update that solves two vulnerabilities can now be installed.

Description:

This update for dnsdist fixes the following issues:

Update to dnsdist 1.9.11:

  • CVE-2025-8671: add mitigations for the HTTP/2 MadeYouReset attack (bsc#1253852).
  • CVE-2025-30187: denial of service via crafted DoH exchange (bsc#1250054).

Patch Instructions:

To install this SUSE update use the SUSE recommended installation methods like YaST online_update or "zypper patch".
Alternatively you can run the command listed for your product:

  • SUSE Linux Enterprise Server - BCI 16.0
    zypper in -t patch SUSE-SLES-16.0-475=1

Package List:

  • SUSE Linux Enterprise Server - BCI 16.0 (aarch64 s390x x86_64)
    • dnsdist-debugsource-1.9.11-160000.1.1
    • dnsdist-1.9.11-160000.1.1
    • dnsdist-debuginfo-1.9.11-160000.1.1

References: