{"dataType":"CVE_RECORD","dataVersion":"5.1","cveMetadata":{"cveId":"CVE-2023-2236","assignerOrgId":"14ed7db2-1595-443d-9d34-6215bf890778","state":"PUBLISHED","assignerShortName":"Google","dateReserved":"2023-04-21T17:43:28.315Z","datePublished":"2023-05-01T12:50:47.742Z","dateUpdated":"2025-03-05T19:03:34.822Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","packageName":"kernel","product":"Linux Kernel","repo":"https://git.kernel.org","vendor":"Linux","versions":[{"lessThan":"6.1","status":"affected","version":"5.19","versionType":"custom"}]}],"datePublic":"2022-11-25T13:54:00.000Z","descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"<p>A use-after-free vulnerability in the Linux Kernel io_uring subsystem can be exploited to achieve local privilege escalation.</p><p>Both&nbsp;<span style=\"background-color: rgb(255, 255, 255);\">io_install_fixed_file</span>&nbsp;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.</p><p>We recommend upgrading past commit 9d94c04c0db024922e886c9fd429659f22f48ea4.</p>"}],"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."}],"impacts":[{"capecId":"CAPEC-233","descriptions":[{"lang":"en","value":"CAPEC-233 Privilege Escalation"}]}],"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":{"orgId":"14ed7db2-1595-443d-9d34-6215bf890778","shortName":"Google","dateUpdated":"2023-06-01T13:06:28.210Z"},"references":[{"tags":["patch"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4"},{"url":"https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4"},{"url":"https://security.netapp.com/advisory/ntap-20230601-0010/"}],"source":{"discovery":"EXTERNAL"},"title":"Use-after-free in Linux kernel's Performance Events subsystem","x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"providerMetadata":{"orgId":"af854a3a-2127-422b-91ae-364da2661108","shortName":"CVE","dateUpdated":"2024-08-02T06:19:13.600Z"},"title":"CVE Program Container","references":[{"tags":["patch","x_transferred"],"url":"https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9d94c04c0db024922e886c9fd429659f22f48ea4"},{"url":"https://kernel.dance/9d94c04c0db024922e886c9fd429659f22f48ea4","tags":["x_transferred"]},{"url":"https://security.netapp.com/advisory/ntap-20230601-0010/","tags":["x_transferred"]}]},{"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"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2025-03-05T19:03:34.822Z"}}]}}