{"api_version":"1","generated_at":"2026-08-19T11:45:09+00:00","cve":"CVE-2026-58084","urls":{"html":"https://cve.report/CVE-2026-58084","api":"https://cve.report/api/cve/CVE-2026-58084.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-58084","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-58084"},"summary":{"title":"Kernel stack disclosure via timer_settime(2)","description":"To retrieve the previous timer value, the kernel calls realtimer_gettime(), which obtains the current time for the timer's clock.  For a timer using CLOCK_TAI this can fail when no TAI offset has been configured, but the error return was not checked, so the uninitialized output buffer was copied to userspace.\n\nAn unprivileged local user can obtain uninitialized kernel stack memory by creating a POSIX timer with CLOCK_TAI and calling timer_settime(2), potentially disclosing sensitive kernel data.","state":"PUBLISHED","assigner":"freebsd","published_at":"2026-08-19 08:17:12","updated_at":"2026-08-19 08:17:12"},"problem_types":["CWE-908","CWE-908 CWE-908: Use of Uninitialized Resource"],"metrics":[],"references":[{"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:51.ktimer.asc","name":"https://security.freebsd.org/advisories/FreeBSD-SA-26:51.ktimer.asc","refsource":"secteam@freebsd.org","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-58084","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-58084","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":"Hazley Samsudin of GovTech CSG","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"cna":{"affected":[{"defaultStatus":"unknown","modules":["ktimer"],"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":"Hazley Samsudin of GovTech CSG"}],"datePublic":"2026-07-29T22:40:00.000Z","descriptions":[{"lang":"en","value":"To retrieve the previous timer value, the kernel calls realtimer_gettime(), which obtains the current time for the timer's clock.  For a timer using CLOCK_TAI this can fail when no TAI offset has been configured, but the error return was not checked, so the uninitialized output buffer was copied to userspace.\n\nAn unprivileged local user can obtain uninitialized kernel stack memory by creating a POSIX timer with CLOCK_TAI and calling timer_settime(2), potentially disclosing sensitive kernel data."}],"problemTypes":[{"descriptions":[{"cweId":"CWE-908","description":"CWE-908: Use of Uninitialized Resource","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-08-19T07:31:42.001Z","orgId":"63664ac6-956c-4cba-a5d0-f46076e16109","shortName":"freebsd"},"references":[{"tags":["vendor-advisory"],"url":"https://security.freebsd.org/advisories/FreeBSD-SA-26:51.ktimer.asc"}],"title":"Kernel stack disclosure via timer_settime(2)","x_generator":{"engine":"cvelib 1.8.0"}}},"cveMetadata":{"assignerOrgId":"63664ac6-956c-4cba-a5d0-f46076e16109","assignerShortName":"freebsd","cveId":"CVE-2026-58084","datePublished":"2026-08-19T07:31:42.001Z","dateReserved":"2026-06-29T01:40:17.498Z","dateUpdated":"2026-08-19T07:31:42.001Z","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-908","CWE-908 CWE-908: Use of Uninitialized Resource"],"metrics":[],"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"58084","Ordinal":"1","Title":"Kernel stack disclosure via timer_settime(2)","CVE":"CVE-2026-58084","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"58084","Ordinal":"1","NoteData":"To retrieve the previous timer value, the kernel calls realtimer_gettime(), which obtains the current time for the timer's clock.  For a timer using CLOCK_TAI this can fail when no TAI offset has been configured, but the error return was not checked, so the uninitialized output buffer was copied to userspace.\n\nAn unprivileged local user can obtain uninitialized kernel stack memory by creating a POSIX timer with CLOCK_TAI and calling timer_settime(2), potentially disclosing sensitive kernel data.","Type":"Description","Title":"Kernel stack disclosure via timer_settime(2)"}]}}}