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SUSE dnsdist Important Denial of Service DoH Flaw 2026-0888-1

suse
Calendar Grey March 13, 2026
Dist Suse Esm H88
Critical SUSE update addresses important dnsdist flaws with denial of service and HTTP/2 security enhancements.
An update that solves two vulnerabilities and has one security fix can now be installed.

Summary

## 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: * Basesystem Module 15-SP7 zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-888=1 ## Package List: * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64) * dnsdist-debugsource-1.9.11-150700.3.6.1 * dnsdist-debuginfo-1.9.11-150700.3.6.1 * dnsdist-1.9.11-150700.3.6.1

Topics%20covered

Topics Covered

security advisory denial of service SuSE important http attack dnsdist

References

* bsc#1243566

* bsc#1250054

* bsc#1253852

Cross-

* CVE-2025-30187

* CVE-2025-8671

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:

* Basesystem Module 15-SP7

* SUSE Linux Enterprise Desktop 15 SP7

* SUSE Linux Enterprise Real Time 15 SP7

* SUSE Linux Enterprise Server 15 SP7

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:0888-1
Release Date: 2026-03-13T07:08:03Z
Rating: important

Topics%20covered

Topics Covered

security advisory denial of service SuSE important http attack dnsdist

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