CVE-2025-21863

io_uring: prevent opcode speculation

CVSS 7.8 HIGHEPSS 0.2%

Vexday Risk Score

21Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 7.8EPSS 0.2%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

12 Mar 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

Linux · Linux

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