News and History of the PNG Development Group from 2016

Herein lie news items and historical stuff primarily of interest to the Portable Network Graphics Development Group itself. Feel free to poke around even if you're not a member, though. Note that some of the links, particularly the older ones, are broken; in some cases this is explained by later entries. Other links (CompuServe, tcg.arl.mil) have fallen prey to reorganizations or upgrades; should they ever reappear, the entries below will be updated as needed.

Keep in mind that this is history here...

• current - see here

• 29 December 2016 - libpng 1.6.27 is released with a fix for a very old null-pointer dereference (potential security vulnerability in some image-editing apps, CVE-2016-10087) and minor build fixes.

• 19 October 2016 - libpng 1.6.26 is released with minor fixes, including handling of zero-length IDATs in pngfix, plugging a memleak when encountering errors in the pCAL chunk, and reducing the error level to "benign" when encountering an Adler-32 checksum mismatch in IDAT chunks.

• 31 August 2016 - libpng 1.6.25 is released with a fix to reject oversized iCCP profiles and the addition of MIPS assembler support, and pngcp is no longer installed by default (conflicts with one in the pngtools package).

• 4 August 2016 - libpng 1.6.24 is released with fixes for potential vulnerabilities in apps that use the PNG_IMAGE_SIZE macro (not used within libpng itself) or that use a custom row_stride value (in which case PNG_IMAGE_BUFFER_SIZE could overflow).

• 9 June 2016 - libpng 1.6.23 is released with a fix for a potential memleak in png_set_tRNS() and a few other minor fixes.

• 26 May 2016 - libpng 1.6.22 is released with some new features (e.g., png_image_write_to_memory() and SSE2 support) and the usual collection of minor fixes and improvements.

• 15 January 2016 - libpng 1.6.21 is released with tweaks to pngvalid and some minor bugfixes.

Here are some related PNG pages at this site:

• Current News of the PNG Development Group
• Historical PNG news:
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• History of PNG
• Current Status of PNG

• PNG Home Page
• Complete PNG Site Map

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