This exploit affects systems with CONFIG_x86_X32 enabled. As it was a point of confusion on the previous post, this refers to the x32 ABI on 64 bit systems. Es

This exploit affects systems with CONFIG_x86_X32 enabled. As it was a point of confusion on the previous post, this refers to the x32 ABI on 64 bit systems. Essentially, if this option is enabled, someone can use the linked code to exploit an x32 syscall and escalate privileges. Ubuntu specifically is a target because they recently enabled this option; I'm not aware of any other distros that have done so.