Memory Leak Vulnerability in Linux Kernel Affecting io_uring Functionality
CVE-2025-40267

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 6 December 2025

What is CVE-2025-40267?

A vulnerability exists in the Linux kernel's io_uring functionality that may lead to a memory leak under certain conditions. Specifically, when internal caches overflow, allocated iovecs can remain in memory if a request is aborted early. This issue stems from a previous update that did not adequately handle early cleanup, necessitating the restoration of a forced free mechanism to prevent potential memory leaks.

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