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Attacking the kernel via its command line

Attacking the kernel via its command line
June 20, 2017
Nur Hussein

The kernel’s command line allows the specification of many operating parameters at boot time. A silly bug in command-line parsing was reported by Ilya Matveychikov on May 22; it can be exploited to force a stack buffer overflow with a controlled payload that can overwrite memory. The bug itself stems from a bounds-checking error that, while simple, has still been in the Linux kernel source since version 2.6.20. The subsequent disclosure post by Matveychikov in the oss-security list spawned a discussion on what constitutes a vulnerability, and what is, instead, merely a bug.[…]

https://lwn.net/Articles/725860/

Follow-up conversation is interesting, as well. Includes a pointer to a few things, such as this blog post:

On dm-verity and operating systems

 

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