Qemu security?
Qemu security?
Posted May 17, 2011 19:19 UTC (Tue) by tbleher (guest, #48307)Parent article: A Linux system running over JavaScript
Very impressive indeed!
There's just one thing that worried me when I read the technical details page:
> No segment limit and right checks when accessing memory (Linux does not rely on them for memory protection, so it is not an issue. The x86 emulator of QEMU has the same restriction).
There's just one thing that worried me when I read the technical details page:
> No segment limit and right checks when accessing memory (Linux does not rely on them for memory protection, so it is not an issue. The x86 emulator of QEMU has the same restriction).
Does that mean that a user process inside Qemu could scribble over the emulated kernel (i.e. no memory protection at all)? Or does this just mean that x86 segments are not implemented?
I'm not a native speaker, so I'm not sure if I parse the sentence correctly.