dnsmasq-base-lua 2.90-0ubuntu0.22.04.1: dnsmasq-base-lua 2.90-0ubuntu0.22.04.1 for Ubuntu 22.04.1 LTS (jammy)

dnsmasq-base-lua 2.90-0ubuntu0.22.04.1, released January 16, 2026, fixes 4 CVEs in dnsmasq-base-lua. None of them is reported as exploited. Patch Radar priority: High.

High1 publicly disclosed

CVEs closed

None rated Critical

Exploited

None reported

Highest CVSS

7.5

Base score, 0 to 10

Highest EPSS

0.9999

99th percentile

Priority of the 4 CVEs

Patch now 0
                                Urgent 0
                                High 3
                                Routine 1

Fixed package versions

Product	Release	Fixed in
dnsmasq-base-lua	Ubuntu 22.04.1 LTS (jammy)	2.90-0ubuntu0.22.04.1

CVEs this fix closes

Priority	CVE	Title	CVSS	EPSS	Exploitation
High	CVE-2023-50387	MITRE: CVE-2023-50387 DNSSEC verification complexity can be exploited to exhaust CPU resources and stall DNS resolvers	7.5	0.9999	Exploitation Less Likely
High	CVE-2023-50868	MITRE: CVE-2023-50868 NSEC3 closest encloser proof can exhaust CPU	7.5	0.7430	DisclosedExploitation Less Likely
High	CVE-2023-49441	dnsmasq: dnsmasq 2.9 is vulnerable to Integer Overflow via forward_query.	7.5	0.0066	None reported
Routine	CVE-2020-37127	dnsmasq: Dnsmasq-utils 2.79-1 contains a buffer overflow vulnerability in the dhcp_release utility that allows attackers to ca...	n/a	0.0021	None reported

Also fixes CVE-2023-50387

KB5034770
Windows Server 2022, Windows Server 2022 (Server Core installation)
KB5034768
Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for ARM64-based Systems, Windows 10 Version 1809 for x64-based Systems and 2 more
KB5034769
Windows Server 2022, 23H2 Edition (Server Core installation)
KB5034767
Windows 10 Version 1607 for 32-bit Systems, Windows 10 Version 1607 for x64-based Systems, Windows Server 2016 and 1 more
KB5034819
Microsoft Defender for Endpoint for Windows on Windows Server 2012 R2, Microsoft Defender for Endpoint for Windows on Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2 and 1 more
KB5034830
Microsoft Defender for Endpoint for Windows on Windows Server 2012, Microsoft Defender for Endpoint for Windows on Windows Server 2012 (Server Core installation), Windows Server 2012 and 1 more
KB5034809
Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)
KB5034831
Windows Server 2008 R2 for x64-based Systems Service Pack 1, Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)

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