CVE-2025-21863
Published: March 13, 2025Last modified: June 2, 2026
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.
Severity score breakdown
| Parameter | Value |
|---|---|
| Base score | 7.8 |
| Attack Vector | LOCAL |
| Attack complexity | LOW |
| Privileges required | LOW |
| User interaction | NONE |
| Scope | UNCHANGED |
| Confidentiality | HIGH |
| Integrity impact | HIGH |
| Availability impact | HIGH |
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Status
| Product | Release | Package | Status |
|---|---|---|---|
| Alpaquita Linux | 23 LTS | linux-lts | Fixed (6.1.175-r0) |
| 25 LTS | linux-lts | Fixed (6.12.41-r0) | |
| Stream | linux-lts | Fixed (6.12.41-r0) |
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/b9826e3b26ec031e9063f64a7c735449c43955e4
- https://git.kernel.org/stable/c/d261ead565a080e3411b0dd04e6d58a52471cac8
- https://git.kernel.org/stable/c/fdbfd52bd8b85ed6783365ff54c82ab7067bd61b