+++ This bug was initially created as a clone of Bug #189933 +++

Several libtiff issues were reported upstream in this bug:
http://bugzilla.remotesensing.org/show_bug.cgi?id=1102

Here is the changelog information for these issues (mangled to groups issues
together).  The dates are as such:

2006-03-07  Andrey Kiselev  <dron.edu>
2006-03-03  Andrey Kiselev  <dron.edu>


Denial of service
-----------------
    * libtiff/tif_dirread.c: Fixed error reporting in TIFFFetchAnyArray()
    function

    * libtiff/{tif_lzw.c, tif_pixarlog.c, tif_zip.c}: Use
    TIFFPredictorCleanup() in codec cleanup methods.

    * libtiff/{tif_jpeg.c, tif_pixarlog.c, tif_fax3.c, tif_zip.c}:
    Properly restore setfield/getfield methods in cleanup functions.

    * libtiff/{tif_predict.c, tif_predict.h}: Added new function
    TIFFPredictorCleanup() to restore parent decode/encode/field methods.

Integer Overflow
----------------
    * libtiff/tif_dirread.c: Fixed integer overflow condition in
    TIFFFetchData() function.

    * libtiff/tif_dirread.c: More wise check for integer overflow
    condition

Double Free
-----------
    * libtiff/{tif_jpeg.c, tif_pixarlog.c, tif_fax3.c, tif_zip.c}:
    Properly restore setfield/getfield methods in cleanup functions.

    Only the tif_jpeg.c patch has been shown to cause a double free issue.
    This block is the same as the one in the DoS section, just copied here for
    the double free description.

The quick testing I did consisted of running tiffinfo over the reproducers in
the upstream bug, only the attachment in comments #1, #2, and #4 crashed on FC4
(I didn't have a FC4 machine handy to test).  A source analysis may be needed to
verify all these issues.

-- Additional comment from bressers on 2006-04-25 17:20 EST --
Created an attachment (id=128227)
Patch extracted from upstream CVS