53 lines
2.0 KiB
Plaintext
53 lines
2.0 KiB
Plaintext
Libpng 1.6.20 - December 3, 2015
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This is a public release of libpng, intended for use in production codes.
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Files available for download:
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Source files with LF line endings (for Unix/Linux) and with a
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"configure" script
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libpng-1.6.20.tar.xz (LZMA-compressed, recommended)
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libpng-1.6.20.tar.gz
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Source files with CRLF line endings (for Windows), without the
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"configure" script
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/scratch/glennrp/Libpng16/lpng1620.7z (LZMA-compressed, recommended)
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/scratch/glennrp/Libpng16/lpng1620.zip
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Other information:
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libpng-1.6.20-README.txt
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libpng-1.6.20-LICENSE.txt
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libpng-1.6.20-*.asc (armored detached GPG signatures)
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Changes since the last public release (1.6.19):
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Avoid potential pointer overflow/underflow in png_handle_sPLT() and
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png_handle_pCAL() (Bug report by John Regehr).
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Fixed incorrect implementation of png_set_PLTE() that uses png_ptr
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not info_ptr, that left png_set_PLTE() open to the CVE-2015-8126
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vulnerability.
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Backported tests from libpng-1.7.0beta69.
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Fixed an error in handling of bad zlib CMINFO field in pngfix, found by
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American Fuzzy Lop, reported by Brian Carpenter. inflate() doesn't
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immediately fault a bad CMINFO field; instead a 'too far back' error
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happens later (at least some times). pngfix failed to limit CMINFO to
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the allowed values but then assumed that window_bits was in range,
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triggering an assert. The bug is mostly harmless; the PNG file cannot
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be fixed.
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In libpng 1.6 zlib initialization was changed to use the window size
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in the zlib stream, not a fixed value. This causes some invalid images,
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where CINFO is too large, to display 'correctly' if the rest of the
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data is valid. This provides a workaround for zlib versions where the
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error arises (ones that support the API change to use the window size
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in the stream).
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Send comments/corrections/commendations to png-mng-implement at lists.sf.net
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(subscription required; visit
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https://lists.sourceforge.net/lists/listinfo/png-mng-implement
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to subscribe)
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or to glennrp at users.sourceforge.net
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Glenn R-P
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