{"cve":"CVE-2025-21863","nvd":{"published":"2025-03-12T10:15:19.387","modified":"2026-10-15T02:17:39.827","status":"Modified","description":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: prevent opcode speculation\n\nsqe->opcode is used for different tables, make sure we santitise it\nagainst speculations.","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":[],"references":["https://git.kernel.org/stable/c/18eae8420081ef8e043ad455937bfb470ef08607","https://git.kernel.org/stable/c/1e988c3fe1264708f4f92109203ac5b1d65de50b","https://git.kernel.org/stable/c/506b9b5e8c2d2a411ea8fe361333f5081c56d23a","https://git.kernel.org/stable/c/87e9eef43c758da267f6332678058a79764c7eba","https://git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4"],"products":["linux:linux_kernel"],"source":"nvd","synced_at":"2026-10-19T22:00:17.429720821+00:00"},"epss":{"cve":"CVE-2025-21863","score":0.00269,"percentile":0.189,"date":"2026-10-25"},"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."]}