A flaw in the Android operating system may leave many Android phones and tablets vulnerable to attack, including the Samsung Galaxy S5 and Google's own Nexus 5. It's the same flaw that was recently discovered in the Linux kernel, on which Android is based — and a just-released Android "rooting" tool that uses the flaw could make the problem even worse. Exploiting the flaw on an Android device yields root permissions, or total control of the system.



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