{"schema_version":"1.9.0","id":"CVE-2025-21863","published":"2025-03-12T09:42:20.552Z","modified":"2026-08-12T03:51:18.696166949Z","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"],"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->opcode is used for different tables, make sure we santitise it\nagainst speculations.","affected":[{"ranges":[{"type":"GIT","repo":"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git","events":[{"introduced":"d3656344fea0339fb0365c8df4d2beba4e0089cd"},{"fixed":"87e9eef43c758da267f6332678058a79764c7eba"},{"fixed":"18eae8420081ef8e043ad455937bfb470ef08607"},{"fixed":"d261ead565a080e3411b0dd04e6d58a52471cac8"},{"fixed":"b9826e3b26ec031e9063f64a7c735449c43955e4"},{"fixed":"506b9b5e8c2d2a411ea8fe361333f5081c56d23a"},{"fixed":"fdbfd52bd8b85ed6783365ff54c82ab7067bd61b"},{"fixed":"1e988c3fe1264708f4f92109203ac5b1d65de50b"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21863.json"}},{"package":{"name":"Kernel","ecosystem":"Linux"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"5.6.0"},{"fixed":"5.10.259"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.11.0"},{"fixed":"5.15.209"}]},{"type":"ECOSYSTEM","events":[{"introduced":"5.16.0"},{"fixed":"6.1.175"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.2.0"},{"fixed":"6.6.80"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.7.0"},{"fixed":"6.12.17"}]},{"type":"ECOSYSTEM","events":[{"introduced":"6.13.0"},{"fixed":"6.13.5"}]}],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-21863.json"}}],"references":[{"type":"WEB","url":"https://git.kernel.org/stable/c/18eae8420081ef8e043ad455937bfb470ef08607"},{"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/87e9eef43c758da267f6332678058a79764c7eba"},{"type":"WEB","url":"https://git.kernel.org/stable/c/b9826e3b26ec031e9063f64a7c735449c43955e4"},{"type":"WEB","url":"https://git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8"},{"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"}],"database_specific":{"cna_assigner":"Linux","osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/21xxx/CVE-2025-21863.json"},"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"}]}