{"schemaVersion":3,"id":"USN-6327-1","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"linux-kvm vulnerabilities\n\nZheng Zhang discovered that the device-mapper implementation in the Linux\nkernel did not properly handle locking during table_clear() operations. A\nlocal attacker could use this to cause a denial of service (kernel\ndeadlock). (CVE-2023-2269)\n\nIt was discovered that a use-after-free vulnerability existed in the HFS+\nfile system implementation in the Linux kernel. A local attacker could\npossibly use this to cause a denial of service (system crash).\n(CVE-2023-2985)\n\nIt was discovered that the DVB Core driver in the Linux kernel did not\nproperly handle locking events in certain situations. A local attacker\ncould use this to cause a denial of service (kernel deadlock).\n(CVE-2023-31084)\n\nIt was discovered that the virtual terminal driver in the Linux kernel\ncontained a use-after-free vulnerability. A local attacker could use this\nto cause a denial of service (system crash) or possibly expose sensitive\ninformation (kernel memory). (CVE-2023-3567)\n\nIt was discovered that the Quick Fair Queueing network scheduler\nimplementation in the Linux kernel contained an out-of-bounds write\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-3611)\n\nIt was discovered that the network packet classifier with\nnetfilter/firewall marks implementation in the Linux kernel did not\nproperly handle reference counting, leading to a use-after-free\nvulnerability. A local attacker could use this to cause a denial of service\n(system crash) or possibly execute arbitrary code. (CVE-2023-3776)","dates":{"published":"2023-08-31T21:51:29.000Z","modified":"2026-06-25T13:32:17.597Z","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":"linux-kvm","name":"linux-kvm","label":"linux-kvm","ecosystem":"Ubuntu","cpePart":null,"purl":"pkg:deb/ubuntu/linux-kvm","purlType":"deb","versions":[{"text":"< 4.4.0-1123.133","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 4.4.0-1123.133","eol":null,"hubHref":null}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://ubuntu.com/security/notices/USN-6327-1","label":"ubuntu.com/security/notices/USN-6327-1","hostname":"ubuntu.com","tags":["Advisory"]},{"url":"https://ubuntu.com/security/CVE-2023-2269","label":"ubuntu.com/security/CVE-2023-2269","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-2985","label":"ubuntu.com/security/CVE-2023-2985","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-3567","label":"ubuntu.com/security/CVE-2023-3567","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-3611","label":"ubuntu.com/security/CVE-2023-3611","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-3776","label":"ubuntu.com/security/CVE-2023-3776","hostname":"ubuntu.com","tags":["REPORT"]},{"url":"https://ubuntu.com/security/CVE-2023-31084","label":"ubuntu.com/security/CVE-2023-31084","hostname":"ubuntu.com","tags":["REPORT"]}],"lineage":{"upstream":["CVE-2023-2269","CVE-2023-2985","CVE-2023-31084","CVE-2023-3567","CVE-2023-3611","CVE-2023-3776"],"downstream":[],"duplicates":[],"related":["CVE-2023-2269","CVE-2023-2985","CVE-2023-31084","CVE-2023-3567","CVE-2023-3611","CVE-2023-3776"]},"timeline":[{"kind":"published","date":"2023-08-31T21:51:29.000Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-06-25T13:32:17.597Z","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":"2026-10-22T07:15:10.998Z","stale":false,"partial":false}}