[lkml]   [2005]   [Jul]   [1]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
    SubjectRe: FUSE merging?
    On Fri, Jul 01, 2005 at 08:36:02AM +0200, Miklos Szeredi wrote:
    > Here's a description of a theoretical DoS scenario:

    So the open() hangs indefinately. but what if blackhat tries to install
    a package from a no longer existing server on /net or via NFS?

    A user supplied pathname is not to be trusted by any setuid (or full
    root) program.

    Another example: I'm not sure if there are still /dev/tty devices which
    may block indefinately upon open() but:

    - I have yet to see a setuid program which always uses O_NONBLOCK
    when opening user supplied pathnames.
    - one cannot stat() and then open() because that gives a race.

    To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
    the body of a message to
    More majordomo info at
    Please read the FAQ at

     \ /
      Last update: 2005-07-01 11:43    [W:0.021 / U:3.900 seconds]
    ©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site