{"id":"UBUNTU-CVE-2022-0934","details":"A single-byte, non-arbitrary write/use-after-free flaw was found in dnsmasq. This flaw allows an attacker who sends a crafted packet processed by dnsmasq, potentially causing a denial of service.","modified":"2026-01-30T02:15:15.968728Z","published":"2022-04-07T00:00:00Z","related":["USN-5408-1"],"upstream":["CVE-2022-0934"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2022-0934"},{"type":"REPORT","url":"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2022q1/016272.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-5408-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2022-0934"}],"affected":[{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:Pro:14.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.68-1ubuntu0.2+esm1?arch=source&distro=trusty/esm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.68-1ubuntu0.2+esm1"}]}],"versions":["2.66-4ubuntu1","2.67-1","2.68-1","2.68-1ubuntu0.1","2.68-1ubuntu0.2"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"dnsmasq","binary_version":"2.68-1ubuntu0.2+esm1"},{"binary_name":"dnsmasq-base","binary_version":"2.68-1ubuntu0.2+esm1"},{"binary_name":"dnsmasq-utils","binary_version":"2.68-1ubuntu0.2+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-0934.json"}},{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.75-1ubuntu0.16.04.10+esm1?arch=source&distro=esm-infra/xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.75-1ubuntu0.16.04.10+esm1"}]}],"versions":["2.75-1","2.75-1ubuntu0.16.04.1","2.75-1ubuntu0.16.04.2","2.75-1ubuntu0.16.04.3","2.75-1ubuntu0.16.04.4","2.75-1ubuntu0.16.04.5","2.75-1ubuntu0.16.04.7","2.75-1ubuntu0.16.04.8","2.75-1ubuntu0.16.04.10"],"ecosystem_specific":{"availability":"Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro","binaries":[{"binary_name":"dnsmasq","binary_version":"2.75-1ubuntu0.16.04.10+esm1"},{"binary_name":"dnsmasq-base","binary_version":"2.75-1ubuntu0.16.04.10+esm1"},{"binary_name":"dnsmasq-utils","binary_version":"2.75-1ubuntu0.16.04.10+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-0934.json"}},{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.79-1ubuntu0.6?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.79-1ubuntu0.6"}]}],"versions":["2.78-1","2.78-3","2.79-1","2.79-1ubuntu0.2","2.79-1ubuntu0.3","2.79-1ubuntu0.4","2.79-1ubuntu0.5"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dnsmasq","binary_version":"2.79-1ubuntu0.6"},{"binary_version":"2.79-1ubuntu0.6","binary_name":"dnsmasq-base"},{"binary_name":"dnsmasq-base-lua","binary_version":"2.79-1ubuntu0.6"},{"binary_name":"dnsmasq-utils","binary_version":"2.79-1ubuntu0.6"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-0934.json"}},{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.80-1.1ubuntu1.5?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.80-1.1ubuntu1.5"}]}],"versions":["2.80-1ubuntu2","2.80-1ubuntu4","2.80-1.1ubuntu1","2.80-1.1ubuntu1.2","2.80-1.1ubuntu1.3","2.80-1.1ubuntu1.4"],"ecosystem_specific":{"binaries":[{"binary_name":"dnsmasq","binary_version":"2.80-1.1ubuntu1.5"},{"binary_name":"dnsmasq-base","binary_version":"2.80-1.1ubuntu1.5"},{"binary_name":"dnsmasq-base-lua","binary_version":"2.80-1.1ubuntu1.5"},{"binary_name":"dnsmasq-utils","binary_version":"2.80-1.1ubuntu1.5"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-0934.json"}},{"package":{"name":"dnsmasq","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/dnsmasq@2.86-1.1ubuntu0.1?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"2.86-1.1ubuntu0.1"}]}],"versions":["2.85-1ubuntu2","2.86-1.1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"dnsmasq","binary_version":"2.86-1.1ubuntu0.1"},{"binary_name":"dnsmasq-base","binary_version":"2.86-1.1ubuntu0.1"},{"binary_name":"dnsmasq-base-lua","binary_version":"2.86-1.1ubuntu0.1"},{"binary_name":"dnsmasq-utils","binary_version":"2.86-1.1ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2022/UBUNTU-CVE-2022-0934.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}]}