[Linux-fbdev-devel] Re: atyfb in 2.5.51

[Alan C. <al...@lx...>]

On Fri, 2002-12-13 at 08:53, Geert Uytterhoeven wrote:
> (At first I thought you meant an instruction where the opcode crosses those
>  two memory types, but we don't put code in video RAM...)

I did. The frame buffer drivers support mmap(). x86 has no "non-exec"
bit. So any user able to open /dev/fb can bring down such a box. Similar
things apply with early athlon and prefetching /dev/fb