{"id":"CVE-2023-2236","state":"PUBLISHED","title":"Use-after-free in Linux kernel's Performance Events subsystem","description":"A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.\n\nBoth io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.","publishedAt":"2023-05-01T12:50:47.742Z","updatedAt":"2025-03-05T19:03:34.822Z","severity":{"score":7.8,"label":"High","version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","source":"Google"},"assigner":"Google","products":["Linux Linux Kernel"],"affected":[{"vendor":"Linux","product":"Linux Kernel","packageName":"kernel","defaultStatus":"unaffected","versions":[{"version":"5.19","status":"affected","lessThan":"6.1","versionType":"custom"}],"repo":"https://git.kernel.org"}],"references":["https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4","https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4","https://security.netapp.com/advisory/ntap-20230601-0010/"],"weaknesses":["CWE-416"],"ingestedAt":"2026-10-29T20:05:52.290Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2023/2xxx/CVE-2023-2236.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-2236","state":"PUBLISHED","datePublished":"2023-05-01T12:50:47.742Z","dateUpdated":"2025-03-05T19:03:34.822Z","assignerShortName":"Google","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","dateReserved":"2023-04-21T17:43:28.315Z"},"containers":{"cna":{"title":"Use-after-free in Linux kernel's Performance Events subsystem","descriptions":[{"lang":"en","value":"A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.\n\nBoth io_install_fixed_file and its callers call fput in a file in case of an error, causing a reference underflow which leads to a use-after-free vulnerability.\n\nWe recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4."}],"affected":[{"vendor":"Linux","product":"Linux Kernel","packageName":"kernel","defaultStatus":"unaffected","versions":[{"version":"5.19","status":"affected","lessThan":"6.1","versionType":"custom"}],"repo":"https://git.kernel.org"}],"references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4","tags":["patch"]},{"url":"https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4"},{"url":"https://security.netapp.com/advisory/ntap-20230601-0010/"}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"HIGH","baseScore":7.8,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-416","description":"CWE-416 Use After Free","lang":"en","type":"CWE"}]}],"providerMetadata":{"shortName":"Google","orgId":"14ed7db2-1595-443d-9d34-6215bf890778","dateUpdated":"2023-06-01T13:06:28.210Z"},"datePublic":"2022-11-25T13:54:00.000Z","impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"title":"CVE Program Container","references":[{"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4","tags":["patch","x_transferred"]},{"url":"https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230601-0010/","tags":["x_transferred"]}],"providerMetadata":{"shortName":"CVE","orgId":"af854a3a-2127-422b-91ae-364da2661108","dateUpdated":"2024-08-02T06:19:13.600Z"}},{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2025-03-05T18:42:16.178951Z","id":"CVE-2023-2236","options":[{"Exploitation":"poc"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2025-03-05T19:03:34.822Z"}}]}}}