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[libpng16] Changed png_inflate() and calling routines to avoid overflow

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problems.  This is an intermediate check-in that solves the immediate problems
and introduces one performance improvement (avoiding a copy via png_ptr->zbuf.)
Further changes will be made to make ICC profile handling more secure.
This commit is contained in:
John Bowler
2012-03-03 21:10:26 -06:00
committed by Glenn Randers-Pehrson
parent 29a6ba01a7
commit 0ae4f7b705
6 changed files with 491 additions and 480 deletions
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@@ -261,6 +261,10 @@ Version 1.6.0beta15 [March 2, 2012]
Version 1.6.0beta16 [March 4, 2012]
Relocated palette-index checking function from pngrutil.c to pngtrans.c
Added palette-index checking while writing.
Changed png_inflate() and calling routines to avoid overflow problems.
This is an intermediate check-in that solves the immediate problems and
introduces one performance improvement (avoiding a copy via png_ptr->zbuf.)
Further changes will be made to make ICC profile handling more secure.
Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default options
declares 'index' as a global, causing a warning if it is used as a local
variable. GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit)