{"api_version":"1","generated_at":"2026-08-19T11:43:59+00:00","cve":"CVE-2026-58086","urls":{"html":"https://cve.report/CVE-2026-58086","api":"https://cve.report/api/cve/CVE-2026-58086.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-58086","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-58086"},"summary":{"title":"ktrace(2) privilege incorrectly validated in jails","description":"As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user.  Tracing configured by a jailed root user was therefore not flagged as privileged.\n\nAn unprivileged user in a jail that has permission to debug the target process can modify the jailed root user's ktrace(2) flags, or disable tracing outright.  A jailed root user therefore cannot reliably trace unprivileged processes.","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-08-19 08:17:12","updated_at":"2026-08-19 08:17:12"},"problem_types":["CWE-273","CWE-273 CWE-273: Improper Check for Dropped Privileges"],"metrics":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc","name":"https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc","refsource":"secteam@freebsd.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58086","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58086","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.1-RELEASE p2 release","platforms":[]},{"source":"CNA","vendor":"FreeBSD","product":"FreeBSD","version":"affected 15.0-RELEASE p12 release","platforms":[]}],"timeline":[],"solutions":[],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"Alexander Leidinger","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["ktrace"],"product":"FreeBSD","vendor":"FreeBSD","versions":[{"lessThan":"p2","status":"affected","version":"15.1-RELEASE","versionType":"release"},{"lessThan":"p12","status":"affected","version":"15.0-RELEASE","versionType":"release"}]}],"credits":[{"lang":"en","type":"finder","value":"Alexander Leidinger"}],"datePublic":"2026-07-29T22:40:00.000Z","descriptions":[{"lang":"en","value":"As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user.  Tracing configured by a jailed root user was therefore not flagged as privileged.\n\nAn unprivileged user in a jail that has permission to debug the target process can modify the jailed root user's ktrace(2) flags, or disable tracing outright.  A jailed root user therefore cannot reliably trace unprivileged processes."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-273","description":"CWE-273: Improper Check for Dropped Privileges","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-19T07:42:10.902Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:53.ktrace.asc"}],"title":"ktrace(2) privilege incorrectly validated in jails","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-58086","datePublished":"2026-08-19T07:42:10.902Z","dateReserved":"2026-06-29T01:40:17.498Z","dateUpdated":"2026-08-19T07:42:10.902Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-08-19 08:17:12","lastModifiedDate":"2026-08-19 08:17:12","problem_types":["CWE-273","CWE-273 CWE-273: Improper Check for Dropped Privileges"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"58086","Ordinal":"1","Title":"ktrace(2) privilege incorrectly validated in jails","CVE":"CVE-2026-58086","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"58086","Ordinal":"1","NoteData":"As an inadvertent side effect of an unrelated code change, PRIV_KTRACE was always denied to a jailed root user.  Tracing configured by a jailed root user was therefore not flagged as privileged.\n\nAn unprivileged user in a jail that has permission to debug the target process can modify the jailed root user's ktrace(2) flags, or disable tracing outright.  A jailed root user therefore cannot reliably trace unprivileged processes.","Type":"Description","Title":"ktrace(2) privilege incorrectly validated in jails"}]}}}