V4 - Limit all memory allocations to configurable values. #2705
Conversation
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
gfoidl
reviewed
Mar 21, 2024
| // to keep the math sane. And reject int.MinValue as a height because you can't | ||
| // get its absolute value (because -int.MinValue is one more than int.MaxValue). | ||
| const int k64KWidth = 65535; | ||
| bool sizeOk = this.infoHeader.Width > 0 && this.infoHeader.Width <= k64KWidth && this.infoHeader.Height != int.MinValue; |
There was a problem hiding this comment.
Suggested change
| bool sizeOk = this.infoHeader.Width > 0 && this.infoHeader.Width <= k64KWidth && this.infoHeader.Height != int.MinValue; | |
| bool sizeOk = (uint)this.infoHeader.Width <= k64KWidth && this.infoHeader.Height != int.MinValue; |
JimBobSquarePants
changed the title
|
Close in favor of #2706 |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
Prerequisites
Description
V4 version of #2704
While the specification does not apply a limitation on BMP dimensions, on some machines attempting to decode a malformed or extremely large BMP can lead to OOM exceptions.
This change limits the dimensions to match the default set by browsers. For example Firefox
Fixes #2696