Libpng 1.6.20rc01 - November 25, 2015

This is not intended to be a public release.  It will be replaced
within a few weeks by a public version or by another test version.

Files available for download:

Source files with LF line endings (for Unix/Linux) and with a
"configure" script

   1.6.20rc01.tar.xz (LZMA-compressed, recommended)
   1.6.20rc01.tar.gz

Source files with CRLF line endings (for Windows), without the
"configure" script

   lp1620r01.7z  (LZMA-compressed, recommended)
   lp1620r01.zip

Other information:

   1.6.20rc01-README.txt
   1.6.20rc01-LICENSE.txt
   libpng-1.6.20rc01-*.asc (armored detached GPG signatures)

Changes since the last public release (1.6.19):

Version 1.6.20beta01 [November 20, 2015]
  Avoid potential pointer overflow/underflow in png_handle_sPLT() and
    png_handle_pCAL() (Bug report by John Regehr).

Version 1.6.20beta02 [November 23, 2015]
  Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
    not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
    vulnerability.

Version 1.6.20beta03 [November 25, 2015]
  Backported tests from libpng-1.7.0beta69.
 
Version 1.6.20rc01 [November 25, 2015]
  Fixed an error in handling of bad zlib CMINFO field, found by American
    Fuzzy Lop, reported by Brian Carpenter.  inflate() doesn't immediately
    fault a bad CMINFO field; instead a 'too far back' error happens later
    (at least some times).  pngfix failed to limit CMINFO to the allowed
    values but then assumed that window_bits was in range, triggering an
    assert. The bug is mostly harmless; the file can't be fixed.

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