{"cve":"CVE-2026-58094","nvd":{"published":"2026-08-26T06:16:26.350","modified":"2026-09-24T13:17:24.210","status":"Analyzed","description":"The FIOSSHMLPGCNF ioctl(2) operation configures the page size for a largepage shared memory object.  This is intended to be used immediately after creating the object, before any memory is allocated for the object.  The handler checked whether a page size had already been configured without holding the rangelock.  Two concurrent callers could both observe an unconfigured object and set conflicting page sizes, leaving the object in an inconsistent state.\n\nAn unprivileged local user can exploit this race to escalate privileges.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","score":7.8},"cwes":["CWE-367"],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-26:63.posixshm.asc"],"products":["freebsd:freebsd"],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-58094","score":0.00119,"percentile":0.01729,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}