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SUSE Avahi Addresses Moderate DoS Vulnerabilities with Fix 2026-22338-1

suse
Calendar Grey July 1, 2026
Dist Suse Esm H88
Two vulnerabilities affecting the avahi application on SUSE are fixed in this security update, addressing significant threats.
An update that solves two vulnerabilities can now be installed.

Summary

## This update for avahi fixes the following issues: * CVE-2026-34933: reachable assertion in `transport_flags_from_domain` can crash the `avahi-daemon` (bsc#1261546). * CVE-2026-24401: unsolicited mDNS responses containing a recursive CNAME record can crash the `avahi-daemon` (bsc#1257235). ## 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 16.0 zypper in -t patch SUSE-SLES-16.0-1026=1 * SUSE Linux Enterprise Server for SAP applications 16.0 zypper in -t patch SUSE-SLES-16.0-1026=1 ## Package List: * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64) * avahi-autoipd-0.8-160000.5.1

Topics%20covered

Topics Covered

security advisory moderate denial of service SuSE system crash avahi

References

* bsc#1257235

* bsc#1261546

Cross-

* CVE-2026-24401

* CVE-2026-34933

CVSS scores:

* CVE-2026-24401 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

* CVE-2026-24401 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

* CVE-2026-24401 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

* CVE-2026-34933 ( SUSE ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

* CVE-2026-34933 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Affected Products:

* SUSE Linux Enterprise Server 16.0

* SUSE Linux Enterprise Server for SAP applications 16.0

An update that solves two vulnerabilities can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-24401.html

* https://www.suse.com/security/cve/CVE-2026-34933.html

Severity
moderate
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:22338-1
Release Date: 2026-06-22T14:40:15Z
Rating: moderate

Topics%20covered

Topics Covered

security advisory moderate denial of service SuSE system crash avahi

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