{"cve":"CVE-2026-58091","nvd":{"published":"2026-08-26T05:18:12.337","modified":"2026-09-24T13:55:22.387","status":"Analyzed","description":"The implementation of this ioctl attempts to acquire locks on all channels in a sync group.  If locking a channel would block, it releases the sync group list lock and sleeps.  Upon reawakening, it is possible that the sync group structure is freed, but the implementation did not handle this possibility.\n\n On a system with a multiple audio devices, an unprivileged local user can exploit this use-after-free 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-416"],"references":["https://security.freebsd.org/advisories/FreeBSD-SA-26:58.sound.asc"],"products":["freebsd:freebsd"],"source":"nvd","synced_at":"2026-10-19T22:50:17.453294893+00:00"},"epss":{"cve":"CVE-2026-58091","score":0.00153,"percentile":0.04457,"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."]}