{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-101308","assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","state":"PUBLISHED","assignerShortName":"freebsd","dateReserved":"2026-09-28T13:33:02.323Z","datePublished":"2026-10-15T07:08:52.619Z","dateUpdated":"2026-10-15T15:40:12.607Z"},"containers":{"cna":{"datePublic":"2026-10-14T18:45:00.000Z","title":"TOCTOU race between sound(4) buffer resizing and mmap","references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc"}],"affected":[{"defaultStatus":"unknown","modules":["sound"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"status":"affected","versionType":"release","version":"15.1-RELEASE","lessThan":"p5"},{"status":"affected","versionType":"release","version":"14.5-RELEASE","lessThan":"p2"},{"status":"affected","versionType":"release","version":"14.4-RELEASE","lessThan":"p11"}]}],"credits":[{"lang":"en","type":"finder","value":"Hazley Samsudin of GovTech CSG"}],"descriptions":[{"lang":"en","value":"When an audio channel's buffer needs to be resized, the sound(4) driver checks that the buffer is not memory-mapped and then drops the channel lock to allocate a new buffer.  An mmap(2) call on another thread can complete during this window, after which the resize path frees the now-mapped buffer without rechecking.\n\nAn unprivileged local user with access to a sound device can exploit this race to trigger a use-after-free in the kernel, potentially escalating privileges."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-367","description":"CWE-367: Time-of-check Time-of-use (TOCTOU) Race Condition","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd","dateUpdated":"2026-10-15T07:08:52.619Z"},"x_generator":{"engine":"cvelib 1.8.0"}},"adp":[{"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":5.5,"attackVector":"LOCAL","baseSeverity":"MEDIUM","vectorString":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"LOW","confidentialityImpact":"NONE"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T15:40:09.578920Z","id":"CVE-2026-101308","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-10-15T15:40:12.607Z"}}]}}