Re: Denial of service attack via libpager

[Richard Braun]

On Sun, Aug 28, 2016 at 05:12:35PM -1000, Brent W. Baccala wrote:
> I should elaborate on what I found with exec.  After I fixed the problem
> with the exec server mmap'ing the library's ELF headers, it just got on a
> little bit further in the process, and then croaked when it tried to mmap
> the program binary itself.

In addition, I've just thought about something else : if we handle
multiple clients, how do we make sure that two kernels, caching the
same file, don't just completely corrupt its content ? We'd need
some kind of cooperation to prevent the file being mapped more than
once I suppose, right ?

-- 
Richard Braun