Die-hard bug bytes Linux kernel for second time

“The Linux kernel has been purged of a bug that gave root access
to untrusted users – again.

“The vulnerability in a component of the operating system that
translates values from 64 bits to 32 bits (and vice versa) was
fixed once before – in 2007 with the release of version
2.6.22.7. But several months later, developers inadvertently rolled
back the change, once again leaving the OS open to attacks that
allow unprivileged users to gain full root access.”

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