{"schemaVersion":3,"id":"MGASA-2022-0374","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"Updated dhcp packages fix security vulnerability\n\nIn ISC DHCP 4.4.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1, when\nthe function option_code_hash_lookup() is called from add_option(), it\nincreases the option's refcount field. However, there is not a\ncorresponding call to option_dereference() to decrement the refcount\nfield. The function add_option() is only used in server responses to\nlease query packets. Each lease query response calls this function for\nseveral options, so eventually, the reference counters could overflow and\ncause the server to abort. (CVE-2022-2928)\n\nIn ISC DHCP 1.0 -> 4.4.3, ISC DHCP 4.1-ESV-R1 -> 4.1-ESV-R16-P1 a system\nwith access to a DHCP server, sending DHCP packets crafted to include fqdn\nlabels longer than 63 bytes, could eventually cause the server to run out\nof memory. (CVE-2022-2929)","dates":{"published":"2022-10-18T23:14:56.000Z","modified":"2026-04-16T04:44:39.887Z","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":"mageia","product":"dhcp","name":"dhcp","label":"dhcp","ecosystem":"Mageia","cpePart":null,"purl":"pkg:rpm/mageia/dhcp","purlType":"rpm","versions":[{"text":"< 4.4.2-10.2.mga8","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.2-10.2.mga8","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://advisories.mageia.org/MGASA-2022-0374.html","label":"advisories.mageia.org/MGASA-2022-0374.html","hostname":"advisories.mageia.org","tags":["Advisory"]},{"url":"https://bugs.mageia.org/show_bug.cgi?id=30942","label":"bugs.mageia.org/show_bug.cgi?id=30942","hostname":"bugs.mageia.org","tags":["REPORT"]},{"url":"https://kb.isc.org/docs/cve-2022-2928","label":"kb.isc.org/docs/cve-2022-2928","hostname":"kb.isc.org","tags":["WEB"]},{"url":"https://kb.isc.org/docs/cve-2022-2929","label":"kb.isc.org/docs/cve-2022-2929","hostname":"kb.isc.org","tags":["WEB"]},{"url":"https://www.openwall.com/lists/oss-security/2022/10/05/1","label":"www.openwall.com/lists/oss-security/2022/10/05/1","hostname":"www.openwall.com","tags":["WEB"]},{"url":"https://ubuntu.com/security/notices/USN-5658-1","label":"ubuntu.com/security/notices/USN-5658-1","hostname":"ubuntu.com","tags":["Advisory"]}],"lineage":{"upstream":["CVE-2022-2928","CVE-2022-2929"],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2022-10-18T23:14:56.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-04-16T04:44:39.887Z","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":"2026-10-20T14:53:36.158Z","stale":false,"partial":false}}