Memory Corruption Vulnerability in Linux Kernel's BPF Module

CVE-2026-98378

What is CVE-2026-98378?

A vulnerability has been discovered in the Linux kernel's BPF module that can lead to memory corruption. The issue arises from how unsettled links are managed during the linking process. A link may be inserted into an ID before it has been fully established. If an error occurs afterwards, the system is left with a dangling reference which can lead to accessing freed memory, potentially causing crashes and instability. This flaw emphasizes the importance of robust memory management practices within kernel-level systems.

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