A COW in Linux

Kishan Suresh
8 min readAug 21, 2021

Well, obviously there is no cow standing inside Linux computers. This article gives a brief academic explanation for a treacherous exploit that has existed since 2007 in Linux-based computers and a step-by-step guide to demonstrate the same.

Intro

The vulnerability is called dirty copy on write (COW) which existed in all Linux-based systems. [1] It was discovered by Phil Oester in October 2016. This…

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Kishan Suresh

Independent down to earth person who loves travel and seeks adventures. Software engineer by profession with lifelong learning and embracing new challenges.