Linux Kernel Vulnerability in BPF Processing by Open Source Community

CVE-2026-98041

What is CVE-2026-98041?

A vulnerability has been identified in the Linux kernel related to the BPF (Berkeley Packet Filter) processing. The issue arises from incorrect behavior in the evaluation of pointer comparisons involving JMP32 instructions. This can lead to erroneous branch predictions, potentially allowing malicious entities to manipulate program execution in an unintended manner. Specifically, the problem occurs when the system fails to accurately differentiate between BPF_JMP and BPF_JMP32 comparisons during conditional checks, which could result in security risks in affected Linux kernel versions.

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