{"schemaVersion":3,"id":"USN-8293-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"bind9 vulnerabilities\n\nVitaly Simonovich discovered that Bind could exhaust memory during GSS-API\nTKEY negotiation. A remote attacker could possibly use this issue to cause\nBind to use excessive resources, leading to a denial of service.\n(CVE-2026-3039)\n\nShuhan Zhang discovered that Bind incorrectly handled self-pointed glue\nrecords. A remote attacker could possibly use this issue to use Bind in\ndenial of service amplification attacks against other systems.\n(CVE-2026-3592)\n\nNaresh Kandula Parmar discovered that Bind incorrectly handled memory in\nthe DNS-over-HTTPS implementation. A remote attacker could possibly use\nthis issue to cause Bind to crash, resulting in a denial of service, or\nexecute arbitrary code. This issue only affected Ubuntu 25.10 and Ubuntu\n26.04 LTS. (CVE-2026-3593)\n\nIt was discovered that Bind incorrectly handled DNS messages whose class\nwas not IN. A remote attacker could possibly use this issue to cause Bind\nto crash, resulting in a denial of service. (CVE-2026-5946)\n\nNaoki Wakamatsu discovered that Bind incorrectly handled SIG(0) validation\nduring a query flood. A remote attacker could possibly use this issue to\ncause Bind to crash, resulting in a denial of service. This issue only\naffected Ubuntu 25.10 and Ubuntu 26.04 LTS. (CVE-2026-5947)\n\nBilly Baraja discovered that Bind had an unbounded resend loop in the\nresolver. A remote attacker could possibly use this issue to cause Bind to\nuse excessive resources, leading to a denial of service. (CVE-2026-5950)","dates":{"published":"2026-05-21T19:11:14.000Z","modified":"2026-06-30T18:16:21.881Z","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":"bind9","name":"bind9","label":"bind9","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/bind9","purlType":"deb","versions":[{"text":"< 1:9.18.39-0ubuntu0.22.04.4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:9.18.39-0ubuntu0.24.04.5","noFixRecorded":false,"fixedIn":null},{"text":"< 1:9.20.11-1ubuntu2.4","noFixRecorded":false,"fixedIn":null},{"text":"< 1:9.20.18-1ubuntu2.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 1:9.18.39-0ubuntu0.22.04.4 | < 1:9.18.39-0ubuntu0.24.04.5 | < 1:9.20.11-1ubuntu2.4 | < 1:9.20.18-1ubuntu2.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-8293-1","label":"ubuntu.com/security/notices/USN-8293-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2026-3039","label":"ubuntu.com/security/CVE-2026-3039","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-3592","label":"ubuntu.com/security/CVE-2026-3592","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-3593","label":"ubuntu.com/security/CVE-2026-3593","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-5946","label":"ubuntu.com/security/CVE-2026-5946","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-5947","label":"ubuntu.com/security/CVE-2026-5947","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2026-5950","label":"ubuntu.com/security/CVE-2026-5950","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":["CVE-2026-3039","CVE-2026-3592","CVE-2026-3593","CVE-2026-5946","CVE-2026-5947","CVE-2026-5950"]},"timeline":[{"kind":"published","date":"2026-05-21T19:11:14.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-30T18:16:21.881Z","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":"2026-10-20T16:53:10.662Z","stale":false,"partial":false}}