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Fix integer overflow in BlobVec::reserve_exact #11234

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merged 1 commit into from Jan 6, 2024

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stepancheg
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Objective

When BlobVec::reserve is called with an argument causing capacity overflow, in release build capacity overflow is ignored, and capacity is decreased.

I'm not sure it is possible to exploit this issue using public API of bevy_ecs, but better fix it anyway.

Solution

Check for capacity overflow.

@matiqo15 matiqo15 added C-Bug An unexpected or incorrect behavior A-ECS Entities, components, systems, and events labels Jan 6, 2024
@james7132 james7132 added this pull request to the merge queue Jan 6, 2024
Merged via the queue into bevyengine:main with commit a35a151 Jan 6, 2024
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@stepancheg stepancheg deleted the blob-vec-cap-overflow branch January 6, 2024 19:30
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4 participants