CVE-2025-21863
CVSS 3.1 Score 7.8 of 10 (high)
Details
Published Mar 12, 2025
Updated: Mar 13, 2025
Summary
CVE-2025-21863 is a recently identified vulnerability affecting the Linux kernel. The issue lies with the nio_uring subsystem, where the opcode used in certain tables is not properly sanitized against speculation attacks. This could potentially enable attackers to execute unintended operations, leading to security vulnerabilities. The Linux community has released a patch to mitigate this issue, addressing the use of unsanitized opcodes and preventing opcode speculation attacks.
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