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SUSE Linux Micro DoS Important dnsmasq Issue 2026-1828-1 CVE-2026-2291

suse
Calendar Grey May 13, 2026
Dist Suse Esm H88
Address an important dnsmasq security risk on SUSE Linux with this latest update to prevent denial of service attacks.
An update that solves one vulnerability can now be installed.

Summary

## This update for dnsmasq fixes the following issue: * CVE-2026-2291: VU#471747: dnsmasq can be abused to record false cached data enabling DoS or attacker redirect (bsc#1258251). ## 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 Micro 5.2 zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1828=1 * SUSE Linux Enterprise Micro for Rancher 5.2 zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1828=1 ## Package List: * SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64) * dnsmasq-debuginfo-2.90-150100.7.34.1 * dnsmasq-debugsource-2.90-150100.7.34.1 * dnsmasq-2.90-150100.7.34.1

References

* bsc#1258251

Cross-

* CVE-2026-2291

CVSS scores:

* CVE-2026-2291 ( SUSE ): 9.2

CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

* CVE-2026-2291 ( SUSE ): 8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected Products:

* SUSE Linux Enterprise Micro 5.2

* SUSE Linux Enterprise Micro for Rancher 5.2

An update that solves one vulnerability can now be installed.

##

* https://www.suse.com/security/cve/CVE-2026-2291.html

* https://bugzilla.suse.com/show_bug.cgi?id=1258251

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:1828-1
Release Date: 2026-05-12T09:07:07Z
Rating: important

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