{"id":"CVE-2025-21863","summary":"io_uring: prevent opcode speculation","details":"In the Linux kernel, the following vulnerability has been resolved:\n\nio_uring: prevent opcode speculation\n\nsqe-\u003eopcode is used for different tables, make sure we santitise it\nagainst speculations.","aliases":["ECHO-ffe2-cef1-f3e2"],"modified":"2026-04-21T02:27:21.459761335Z","published":"2025-03-12T09:42:20.552Z","related":["ALSA-2025:20095","ALSA-2025:20518","SUSE-SU-2025:01614-1","SUSE-SU-2025:01707-1","SUSE-SU-2025:01919-1","SUSE-SU-2025:01951-1","SUSE-SU-2025:01964-1","SUSE-SU-2025:01967-1","SUSE-SU-2025:20192-1","SUSE-SU-2025:20206-1","SUSE-SU-2025:20270-1","SUSE-SU-2025:20283-1","USN-7521-2"],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21863.json"},"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/1e988c3fe1264708f4f92109203ac5b1d65de50b"},{"type":"WEB","url":"https://git.kernel.org/stable/c/506b9b5e8c2d2a411ea8fe361333f5081c56d23a"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21863.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-21863"},{"type":"PACKAGE","url":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d3656344fea0339fb0365c8df4d2beba4e0089cd"},{"fixed":"b9826e3b26ec031e9063f64a7c735449c43955e4"},{"fixed":"506b9b5e8c2d2a411ea8fe361333f5081c56d23a"},{"fixed":"fdbfd52bd8b85ed6783365ff54c82ab7067bd61b"},{"fixed":"1e988c3fe1264708f4f92109203ac5b1d65de50b"}]}],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2025-21863.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}