Fedora 34: 2021-3f001ba18b Critical: Pngcheck Undefined Behavior

pngcheck verifies the integrity of PNG, JNG and MNG files (by checking the

internal 32-bit CRCs [checksums] and decompressing the image data); it can

optionally dump almost all of the chunk-level information in the image in

human-readable form. For example, it can be used to print the basic statistics

about an image (dimensions, bit depth, etc.); to list the color and

transparency info in its palette (assuming it has one); or to extract the

embedded text annotations. This is a command-line program with batch

capabilities.

The current release supports all PNG, MNG and JNG chunks, including the newly

approved sTER stereo-layout chunk. It correctly reports errors in all but two

of the images in Chris Nokleberg's brokensuite-20061204.

New upstream release 3.0.3. Fixes #1949800, in which certain invalid PNG data

could cause an integer division-by-zero, invoking undefined behavior.

* Mon Apr 26 2021 Benjamin A. Beasley - 3.0.3-1

- New upstream release 3.0.3 (fixes #1949800)

su -c 'dnf upgrade --advisory FEDORA-2021-3f001ba18b' at the command

line. For more information, refer to the dnf documentation available at

https://dnf.readthedocs.io/en/latest/command_ref.html

All packages are signed with the Fedora Project GPG key. More details on the

GPG keys used by the Fedora Project can be found at

https://fedoraproject.org/security/

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