CVE-2025-21863
Medium
Elevated severity or exploit probability.
CVSS base
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
0.2%
14.5th percentile
CISA KEV
Not listed
Weakness / dates
—
Published 2025-03-12 · modified 2026-09-08
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2025-03-12 — Published (NVD)
- 2026-09-08 — Last modified (NVD)
Description
In the Linux kernel, the following vulnerability has been resolved: io_uring: prevent opcode speculation sqe->opcode is used for different tables, make sure we santitise it against speculations.
Affected
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
- https://git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8
- https://git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b
- https://cert-portal.siemens.com/productcert/html/ssa-019113.html