{"id":"CVE-2020-11935","state":"PUBLISHED","title":"aufs: improperly managed inode reference counts in the vfsub_dentry_open() method","description":"It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack.","publishedAt":"2023-04-07T00:00:00.000Z","updatedAt":"2024-08-04T11:42:00.593Z","severity":{"score":4.4,"label":"Medium","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","source":"canonical"},"assigner":"canonical","products":["Ubuntu Linux kernel (aufs filesystem module)"],"affected":[{"vendor":"Ubuntu","product":"Linux kernel (aufs filesystem module)","versions":[{"version":"4.4.0-186.216","status":"unaffected","lessThan":"4.4*","versionType":"custom"},{"version":"4.15.0-112.113","status":"unaffected","lessThan":"4.15*","versionType":"custom"},{"version":"5.4.0-42.46","status":"unaffected","lessThan":"5.4*","versionType":"custom"}]}],"references":["https://ubuntu.com/security/CVE-2020-11935","https://bugs.launchpad.net/bugs/1873074"],"weaknesses":["CWE-911"],"ingestedAt":"2026-10-29T19:46:24.834Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2020/11xxx/CVE-2020-11935.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2020-11935","state":"PUBLISHED","datePublished":"2023-04-07T00:00:00.000Z","dateUpdated":"2024-08-04T11:42:00.593Z","assignerShortName":"canonical","assignerOrgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateReserved":"2020-04-20T00:00:00.000Z"},"containers":{"cna":{"title":"aufs: improperly managed inode reference counts in the vfsub_dentry_open() method","descriptions":[{"lang":"en","value":"It was discovered that aufs improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service attack."}],"affected":[{"vendor":"Ubuntu","product":"Linux kernel (aufs filesystem module)","versions":[{"version":"4.4.0-186.216","status":"unaffected","lessThan":"4.4*","versionType":"custom"},{"version":"4.15.0-112.113","status":"unaffected","lessThan":"4.15*","versionType":"custom"},{"version":"5.4.0-42.46","status":"unaffected","lessThan":"5.4*","versionType":"custom"}]}],"references":[{"url":"https://ubuntu.com/security/CVE-2020-11935","name":"Ubuntu Security CVE-2020-11935","tags":["vendor-advisory"]},{"url":"https://bugs.launchpad.net/bugs/1873074","name":"Launchpad Bug 1873074","tags":["vendor-advisory"]}],"metrics":[{"cvssV3_1":{"version":"3.1","vectorString":"CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H","attackVector":"LOCAL","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH","baseScore":4.4,"baseSeverity":"MEDIUM"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-911","type":"CWE","lang":"en","description":"CWE-911 Improper Update of Reference Count"}]}],"providerMetadata":{"shortName":"canonical","orgId":"cc1ad9ee-3454-478d-9317-d3e869d708bc","dateUpdated":"2023-04-07T00:00:00.000Z"},"credits":[{"lang":"en","value":"Mauricio Faria de Oliveira discovered that the aufs implementation in the Linux kernel improperly managed inode reference counts in the vfsub_dentry_open() method. A local attacker could use this vulnerability to cause a denial of service."}],"x_generator":{"engine":"Vulnogram 0.0.9"},"source":{"defect":["LP#1873074"],"discovery":"USER"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://ubuntu.com/security/CVE-2020-11935","name":"Ubuntu Security CVE-2020-11935","tags":["vendor-advisory","x_transferred"]},{"url":"https://bugs.launchpad.net/bugs/1873074","name":"Launchpad Bug 1873074","tags":["vendor-advisory","x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-04T11:42:00.593Z"}}]}}}