{"id":"UBUNTU-CVE-2026-37459","details":"An integer underflow in FRRouting (FRR) stable/10.0 to stable/10.6 allows attackers to cause a Denial of Service (DoS) via supplying a crafted BGP UPDATE message.","modified":"2026-06-30T18:17:59.272033651Z","published":"2026-05-04T18:16:00Z","related":["USN-8376-1"],"upstream":["CVE-2026-37459"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-37459"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2026-37459"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8376-1"}],"affected":[{"package":{"name":"quagga","ecosystem":"Ubuntu:Pro:16.04:LTS","purl":"pkg:deb/ubuntu/quagga?arch=source&distro=esm-infra%2Fxenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["0.99.24.1-2","0.99.24.1-2ubuntu1","0.99.24.1-2ubuntu1.1","0.99.24.1-2ubuntu1.2","0.99.24.1-2ubuntu1.3","0.99.24.1-2ubuntu1.4","0.99.24.1-2ubuntu1.4+esm1"],"ecosystem_specific":{"binaries":[{"binary_name":"quagga","binary_version":"0.99.24.1-2ubuntu1.4+esm1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-37459.json"}},{"package":{"name":"quagga","ecosystem":"Ubuntu:Pro:18.04:LTS","purl":"pkg:deb/ubuntu/quagga?arch=source&distro=esm-infra%2Fbionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.1.1-3","1.1.1-3ubuntu1","1.2.2-1","1.2.2-1ubuntu1","1.2.4-1","1.2.4-1ubuntu0.1~esm1","1.2.4-1ubuntu0.1~esm2"],"ecosystem_specific":{"binaries":[{"binary_name":"quagga","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_name":"quagga-bgpd","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_name":"quagga-core","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_version":"1.2.4-1ubuntu0.1~esm2","binary_name":"quagga-isisd"},{"binary_version":"1.2.4-1ubuntu0.1~esm2","binary_name":"quagga-ospf6d"},{"binary_name":"quagga-ospfd","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_name":"quagga-pimd","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_name":"quagga-ripd","binary_version":"1.2.4-1ubuntu0.1~esm2"},{"binary_name":"quagga-ripngd","binary_version":"1.2.4-1ubuntu0.1~esm2"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-37459.json"}},{"package":{"name":"quagga","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/quagga?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["1.2.4-4build1","1.2.4-4ubuntu0.1","1.2.4-4ubuntu0.4","1.2.4-4ubuntu0.5"],"ecosystem_specific":{"binaries":[{"binary_name":"quagga","binary_version":"1.2.4-4ubuntu0.5"},{"binary_name":"quagga-bgpd","binary_version":"1.2.4-4ubuntu0.5"},{"binary_name":"quagga-core","binary_version":"1.2.4-4ubuntu0.5"},{"binary_name":"quagga-isisd","binary_version":"1.2.4-4ubuntu0.5"},{"binary_version":"1.2.4-4ubuntu0.5","binary_name":"quagga-ospf6d"},{"binary_name":"quagga-ospfd","binary_version":"1.2.4-4ubuntu0.5"},{"binary_name":"quagga-pimd","binary_version":"1.2.4-4ubuntu0.5"},{"binary_name":"quagga-ripd","binary_version":"1.2.4-4ubuntu0.5"},{"binary_version":"1.2.4-4ubuntu0.5","binary_name":"quagga-ripngd"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-37459.json"}},{"package":{"name":"frr","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/frr?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.4.1-3ubuntu1.4"}]}],"versions":["10.2.1-1ubuntu3","10.3-3ubuntu2","10.4.1-3ubuntu1","10.4.1-3ubuntu1.1","10.4.1-3ubuntu1.2","10.4.1-3ubuntu1.3"],"ecosystem_specific":{"availability":"No 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