1Libpng 1.6.20 - December 3, 2015 2 3This is a public release of libpng, intended for use in production codes. 4 5Files available for download: 6 7Source files with LF line endings (for Unix/Linux) and with a 8"configure" script 9 10 libpng-1.6.20.tar.xz (LZMA-compressed, recommended) 11 libpng-1.6.20.tar.gz 12 13Source files with CRLF line endings (for Windows), without the 14"configure" script 15 16 /scratch/glennrp/Libpng16/lpng1620.7z (LZMA-compressed, recommended) 17 /scratch/glennrp/Libpng16/lpng1620.zip 18 19Other information: 20 21 libpng-1.6.20-README.txt 22 libpng-1.6.20-LICENSE.txt 23 libpng-1.6.20-*.asc (armored detached GPG signatures) 24 25Changes since the last public release (1.6.19): 26 Avoid potential pointer overflow/underflow in png_handle_sPLT() and 27 png_handle_pCAL() (Bug report by John Regehr). 28 Fixed incorrect implementation of png_set_PLTE() that uses png_ptr 29 not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126 30 vulnerability. 31 Backported tests from libpng-1.7.0beta69. 32 Fixed an error in handling of bad zlib CMINFO field in pngfix, found by 33 American Fuzzy Lop, reported by Brian Carpenter. inflate() doesn't 34 immediately fault a bad CMINFO field; instead a 'too far back' error 35 happens later (at least some times). pngfix failed to limit CMINFO to 36 the allowed values but then assumed that window_bits was in range, 37 triggering an assert. The bug is mostly harmless; the PNG file cannot 38 be fixed. 39 In libpng 1.6 zlib initialization was changed to use the window size 40 in the zlib stream, not a fixed value. This causes some invalid images, 41 where CINFO is too large, to display 'correctly' if the rest of the 42 data is valid. This provides a workaround for zlib versions where the 43 error arises (ones that support the API change to use the window size 44 in the stream). 45 46Send comments/corrections/commendations to png-mng-implement at lists.sf.net 47(subscription required; visit 48https://lists.sourceforge.net/lists/listinfo/png-mng-implement 49to subscribe) 50or to glennrp at users.sourceforge.net 51 52Glenn R-P 53