{"id":"UBUNTU-CVE-2020-27638","details":"receive.c in fastd before v21 allows denial of service (assertion failure) when receiving packets with an invalid type code.","modified":"2026-02-04T04:19:58.956001Z","published":"2020-10-22T13:15:00Z","related":["USN-4610-1","USN-4718-1"],"upstream":["CVE-2020-27638"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2020-27638"},{"type":"REPORT","url":"https://github.com/NeoRaider/fastd/commit/737925113363b6130879729cdff9ccc46c33eaea"},{"type":"REPORT","url":"https://bugs.debian.org/972521"},{"type":"REPORT","url":"https://fastd.readthedocs.io/en/stable/releases/v21.html"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4610-1"},{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-4718-1"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2020-27638"}],"affected":[{"package":{"name":"fastd","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/fastd@17-4ubuntu0.1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"17-4ubuntu0.1"}]}],"versions":["17-4","17-4build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"17-4ubuntu0.1","binary_name":"fastd"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27638.json"}},{"package":{"name":"fastd","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/fastd@18-3ubuntu0.18.04.1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18-3ubuntu0.18.04.1"}]}],"versions":["18-2","18-2ubuntu1","18-2ubuntu2","18-3"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"fastd","binary_version":"18-3ubuntu0.18.04.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27638.json"}},{"package":{"name":"fastd","ecosystem":"Ubuntu:20.04:LTS","purl":"pkg:deb/ubuntu/fastd@18-3ubuntu0.1?arch=source&distro=focal"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"18-3ubuntu0.1"}]}],"versions":["18-3build1"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_name":"fastd","binary_version":"18-3ubuntu0.1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2020/UBUNTU-CVE-2020-27638.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":"Ubuntu","score":"medium"}]}