{"schemaVersion":3,"id":"USN-6736-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"klibc vulnerabilities\n\nIt was discovered that zlib, vendored in klibc, incorrectly handled pointer\narithmetic. An attacker could use this issue to cause klibc to crash or to\npossibly execute arbitrary code. (CVE-2016-9840, CVE-2016-9841)\n\nDanilo Ramos discovered that zlib, vendored in klibc, incorrectly handled\nmemory when performing certain deflating operations. An attacker could use\nthis issue to cause klibc to crash or to possibly execute arbitrary code.\n(CVE-2018-25032)\n\nEvgeny Legerov discovered that zlib, vendored in klibc, incorrectly handled\nmemory when performing certain inflate operations. An attacker could use\nthis issue to cause klibc to crash or to possibly execute arbitrary code.\n(CVE-2022-37434)","dates":{"published":"2024-04-16T11:43:39.000Z","modified":"2026-06-29T13:51:09.001Z","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":"klibc","name":"klibc","label":"klibc","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/klibc","purlType":"deb","versions":[{"text":"< 2.0.3-0ubuntu1.14.04.3+esm3","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.4-8ubuntu1.16.04.4+esm2","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.4-9ubuntu2.2+esm1","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.7-1ubuntu5.2","noFixRecorded":false,"fixedIn":null},{"text":"< 2.0.10-4ubuntu0.1","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 2.0.3-0ubuntu1.14.04.3+esm3 | < 2.0.4-8ubuntu1.16.04.4+esm2 | < 2.0.4-9ubuntu2.2+esm1 | < 2.0.7-1ubuntu5.2 | < 2.0.10-4ubuntu0.1","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6736-1","label":"ubuntu.com/security/notices/USN-6736-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2016-9840","label":"ubuntu.com/security/CVE-2016-9840","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2016-9841","label":"ubuntu.com/security/CVE-2016-9841","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2018-25032","label":"ubuntu.com/security/CVE-2018-25032","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2022-37434","label":"ubuntu.com/security/CVE-2022-37434","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2016-9840","CVE-2016-9841","CVE-2018-25032","CVE-2022-37434"],"downstream":[],"duplicates":[],"related":["CVE-2016-9840","CVE-2016-9841","CVE-2018-25032","CVE-2022-37434"]},"timeline":[{"kind":"published","date":"2024-04-16T11:43:39.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-29T13:51:09.001Z","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":"2026-10-19T22:20:14.423Z","stale":false,"partial":false}}