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[libpng17] Updated CHANGES and ANNOUNCE

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Glenn Randers-Pehrson 2016-01-12 14:44:47 -06:00
parent 3d024874a5
commit 6271b4fc78
2 changed files with 27 additions and 3 deletions
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16
ANNOUNCE
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@ -1,5 +1,5 @@
Libpng 1.7.0beta77 - January 11, 2016
Libpng 1.7.0beta77 - January 12, 2016
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.
@ -1172,7 +1172,7 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 11, 2016]
Version 1.7.0beta77 [January 12, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
Prevent the CMINFO optimization code from running twice on any PNG IDAT
stream longer than 2048 bytes; the second time could overwrite bytes
@ -1200,6 +1200,18 @@ Version 1.7.0beta77 [January 11, 2016]
that the latter should only affect the write code. This includes a
quiet API change to alter png_set_compression_buffer_size to use
a png_alloc_size_t, not png_size_t and implement the correct checks.
Fixed recently introduced palette sharing bug. The internal read
code change to stop sharing the palette was incompletely implemented.
The result is that unless palette index checking is turned off and
there are no read transformations the png_info palette gets deleted
when the png_struct is deleted. This is normally harmless (png_info
gets deleted first) but in the case of pngcp it results in
use-after-free of the palette and, therefore, palette corruption and
maybe on some operating systems and access violation.
Updated the pngcp 'search' mode to check a restricted range of memLevels;
there is an unrelated bug which means that lower zlib memLevels result
in memory corruption under some circumstances, probably less often
than 1:1000.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit

14
CHANGES
View File

@ -5471,7 +5471,7 @@ Version 1.7.0beta76 [January 7, 2016]
Fixed new Coverity defect, potential NULL dereference of "ps" in pngwutil.c
Added temporary workaround for Coverity "Dead code" defect.
Version 1.7.0beta77 [January 11, 2016]
Version 1.7.0beta77 [January 12, 2016]
Fixed new Coverity defect, another NULL dereference of "ps" in pngwutil.c
Prevent the CMINFO optimization code from running twice on any PNG IDAT
stream longer than 2048 bytes; the second time could overwrite bytes
@ -5499,6 +5499,18 @@ Version 1.7.0beta77 [January 11, 2016]
that the latter should only affect the write code. This includes a
quiet API change to alter png_set_compression_buffer_size to use
a png_alloc_size_t, not png_size_t and implement the correct checks.
Fixed recently introduced palette sharing bug. The internal read
code change to stop sharing the palette was incompletely implemented.
The result is that unless palette index checking is turned off and
there are no read transformations the png_info palette gets deleted
when the png_struct is deleted. This is normally harmless (png_info
gets deleted first) but in the case of pngcp it results in
use-after-free of the palette and, therefore, palette corruption and
maybe on some operating systems and access violation.
Updated the pngcp 'search' mode to check a restricted range of memLevels;
there is an unrelated bug which means that lower zlib memLevels result
in memory corruption under some circumstances, probably less often
than 1:1000.
Send comments/corrections/commendations to png-mng-implement at lists.sf.net
(subscription required; visit