{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-58090", "assignerOrgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "state": "PUBLISHED", "assignerShortName": "freebsd", "dateReserved": "2026-06-29T01:40:17.498Z", "datePublished": "2026-08-26T04:35:10.739Z", "dateUpdated": "2026-08-26T15:25:19.535Z"}, "containers": {"cna": {"datePublic": "2026-08-25T19:45:00.000Z", "title": "Use-after-free in unix SOCK_STREAM message handling", "references": [{"tags": ["vendor-advisory"], "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:57.unix.asc"}], "affected": [{"defaultStatus": "unknown", "modules": ["unix"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"status": "affected", "versionType": "release", "version": "15.1-RELEASE", "lessThan": "p3"}, {"status": "affected", "versionType": "release", "version": "15.0-RELEASE", "lessThan": "p13"}]}], "credits": [{"lang": "en", "type": "finder", "value": "Mark Johnston"}], "descriptions": [{"lang": "en", "value": "The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer.\n\nAn unprivileged local user can exploit this use-after-free to escalate privileges."}], "problemTypes": [{"descriptions": [{"cweId": "CWE-416", "description": "CWE-416: Use After Free", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "63664ac6-956c-4cba-a5d0-f46076e16109", "shortName": "freebsd", "dateUpdated": "2026-08-26T04:35:10.739Z"}, "x_generator": {"engine": "cvelib 1.8.0"}}, "adp": [{"metrics": [{"cvssV3_1": {"scope": "UNCHANGED", "version": "3.1", "baseScore": 7.8, "attackVector": "LOCAL", "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H", "integrityImpact": "HIGH", "userInteraction": "NONE", "attackComplexity": "LOW", "availabilityImpact": "HIGH", "privilegesRequired": "LOW", "confidentialityImpact": "HIGH"}}, {"other": {"type": "ssvc", "content": {"timestamp": "2026-08-26T15:24:52.872852Z", "id": "CVE-2026-58090", "options": [{"Exploitation": "none"}, {"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": "2026-08-26T15:25:19.535Z"}}]}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unknown", "modules": ["unix"], "product": "FreeBSD", "vendor": "FreeBSD", "versions": [{"lessThan": "p3", "status": "affected", "version": "15.1-RELEASE", "versionType": "release"}, {"lessThan": "p13", "status": "affected", "version": "15.0-RELEASE", "versionType": "release"}]}], "source": "secteam@freebsd.org"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The SOCK_STREAM receive path in the unix socket implementation failed to fully detach control messages from the socket buffer before processing them. Some error paths would free those messages, leaving freed data mbufs in the receive socket buffer.\n\nAn unprivileged local user can exploit this use-after-free to escalate privileges."}], "id": "CVE-2026-58090", "lastModified": "2026-08-26T16:54:50.030", "metrics": {"cvssMetricV31": [{"cvssData": {"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"}, "exploitabilityScore": 1.8, "impactScore": 5.9, "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-58090", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-08-26T15:24:52.872852Z", "version": "2.0.3"}}]}, "published": "2026-08-26T05:18:12.217", "references": [{"source": "secteam@freebsd.org", "url": "https://security.freebsd.org/advisories/FreeBSD-SA-26:57.unix.asc"}], "sourceIdentifier": "secteam@freebsd.org", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-416"}], "source": "secteam@freebsd.org", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.1-RELEASE,p3)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[15.0-RELEASE,p13)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "FreeBSD", "source": "cna", "vendor": "FreeBSD"}, "product": "freebsd", "vendor": "freebsd"}], "created": "2026-08-26T05:30:18.032330+00:00", "updated": "2026-08-26T06:00:12.837862+00:00", "vendors": ["freebsd", "freebsd$PRODUCT$freebsd"]}