Linux kernel kill switch proposal sparks fierce debate

A Linux kernel maintainer proposed an administrator-controlled kill switch to disable vulnerable code paths before patches land.

Red Hat backs the idea as a temporary way to reduce exposure during zero-day and patch delays.

Critics worry it could discourage timely patching and create operational or correctness risks in the kernel.

The debate comes amid a spike in kernel CVEs and active exploits, including issues like CVE-2026-31431 and CISA KEV-listed flaws.