{"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"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "modules": ["sound"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p5", "status": "affected", "version": "15.1-RELEASE", "versionType": "release"}, {"lessThan": "p2", "status": "affected", "version": "14.5-RELEASE", "versionType": "release"}, {"lessThan": "p11", "status": "affected", "version": "14.4-RELEASE", "versionType": "release"}]}], "source": "[email protected]"}], "cveTags": [], "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."}], "id": "CVE-2026-101308", "lastModified": "2026-10-15T07:17:58.007", "metrics": {}, "published": "2026-10-15T07:17:58.007", "references": [{"source": "[email protected]", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:71.sound.asc"}], "sourceIdentifier": "[email protected]", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-367"}], "source": "[email protected]", "type": "Secondary"}]}

{}

{}