Cisco has some unusual challenges when it comes to deploying security patches across the company's many devices running custom kernels. John Fastabend spoke about his work preventing exploits with BPF at the 2026
Linux Storage,
Filesystem, Memory-Management, and BPF Summit.
The technique could substantially reduce the time necessary to respond to kernel
vulnerabilities, but it will not be fully effective unless more hooks are added to the kernel.
https://lwn.net/Articles/1081546/
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