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Gif decoder. Fix memory access violations.#2014

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JimBobSquarePants merged 6 commits intomainfrom
js/fix-2012
Feb 21, 2022
Merged

Gif decoder. Fix memory access violations.#2014
JimBobSquarePants merged 6 commits intomainfrom
js/fix-2012

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@JimBobSquarePants JimBobSquarePants commented Feb 18, 2022 •
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Description

Fix #2012

  • Fixes GifXmpApplicationExtension by using a more robust (handles empty profiles) and less allocation heavy reader.
  • Provides protection against invalid memory operations in LzwDecoder
  • Fixes cloning of XmpProfile when cloning ImageMetadata

Integrity of reencoded metadata has been tested externally using ExifTools

@JimBobSquarePants JimBobSquarePants added this to the 2.*.* milestone Feb 18, 2022
@JimBobSquarePants JimBobSquarePants requested a review from a team February 18, 2022 15:43
@JimBobSquarePants JimBobSquarePants changed the title Gif decoder. Handle empty XMP profiles. Gif decoder. Fix memory access violations. Feb 19, 2022
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@JimBobSquarePants JimBobSquarePants requested a review from a team February 21, 2022 07:41
brianpopow
brianpopow approved these changes Feb 21, 2022
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Looks good

@JimBobSquarePants JimBobSquarePants merged commit 6727d6e into main Feb 21, 2022
@JimBobSquarePants JimBobSquarePants deleted the js/fix-2012 branch February 21, 2022 10:48
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@brianpopow brianpopow brianpopow approved these changes

@antonfirsov antonfirsov Awaiting requested review from antonfirsov

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bug formats:gif metadata:xmp

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2.1.0

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Successfully merging this pull request may close these issues.

Fail to Load a Gif Image with v2.0.0 but works with v1.0.4 on the same machine.

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