{"schemaVersion":3,"id":"USN-5658-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"isc-dhcp vulnerabilities\n\nIt was discovered that DHCP incorrectly handled option reference counting.\nA remote attacker could possibly use this issue to cause DHCP servers to\ncrash, resulting in a denial of service. (CVE-2022-2928)\n\nIt was discovered that DHCP incorrectly handled certain memory operations.\nA remote attacker could possibly use this issue to cause DHCP clients and\nservers to consume resources, leading to a denial of service.\n(CVE-2022-2929)","dates":{"published":"2022-10-05T16:45:48.000Z","modified":"2026-04-22T10:28:27.281Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":null,"severity":"unknown","version":null,"versionLabel":null,"source":null,"vector":null,"computed":false,"selection":"none"},"metrics":[]},"epss":{"probability":null,"percentile":null,"severity":"unknown","asOf":null,"change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[],"last30":[]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[],"affected":[{"vendor":"ubuntu","product":"isc-dhcp","name":"isc-dhcp","label":"isc-dhcp","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/isc-dhcp","purlType":"deb","versions":[{"text":"< 4.3.5-3ubuntu7.4","noFixRecorded":false,"fixedIn":null},{"text":"< 4.4.1-2.1ubuntu5.20.04.4","noFixRecorded":false,"fixedIn":null},{"text":"< 4.4.1-2.3ubuntu2.3","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.3.5-3ubuntu7.4 | < 4.4.1-2.1ubuntu5.20.04.4 | < 4.4.1-2.3ubuntu2.3","eol":{"isEol":null,"eolDate":null,"matchMethod":"name_exact","cycle":null,"product":{"name":"isc-dhcp","label":"ISC DHCP","category":"server-app"}},"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-5658-1","label":"ubuntu.com/security/notices/USN-5658-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2022-2928","label":"ubuntu.com/security/CVE-2022-2928","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-2929","label":"ubuntu.com/security/CVE-2022-2929","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2022-2928","CVE-2022-2929"],"downstream":[],"duplicates":[],"related":["CVE-2022-2928","CVE-2022-2929"]},"timeline":[{"kind":"published","date":"2022-10-05T16:45:48.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-22T10:28:27.281Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":0,"level":"minimal","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-20T16:50:25.298Z","stale":false,"partial":false}}