Race Condition in Linux Kernel's macvlan Implementation
CVE-2026-23273

Currently unrated

Key Information:

Vendor: Linux
Status: Linux
Vendor: CVE Published:; 20 March 2026

What is CVE-2026-23273?

A race condition in the macvlan implementation of the Linux kernel allows for a potential use-after-free scenario during device link operations. When creating a macvlan interface, improper handling of device visibility in error paths may lead to dereferencing freed memory. This vulnerability arises in the context of networking operations, specifically in the macvlan_common_newlink function. If exploited, it could lead to unpredictable behavior, network issues, or application crashes, affecting the overall stability of the system.

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