Memory Management Flaw in Linux Kernel Affects Multiple Versions

CVE-2026-52943

What is CVE-2026-52943?

A critical memory management vulnerability in the Linux kernel arises from improper handling of shared information in socket buffers. The issue occurs in functions that copy the socket buffer shared info, leading to a scenario where reference counting is not correctly managed for zero-copy buffers. This oversight allows an attacker to exploit the vulnerability, potentially escalating privileges to root level from an unprivileged local user. This flaw highlights the necessity for developers and security teams to apply the latest patches to prevent unauthorized access and ensure system integrity. Immediate attention is required to address the vulnerability and maintain secure operations within affected environments.

References