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Handle Out of Bounds Read In Input Message Data (#6439)
## Description Previously, when the offset in `input_message_data()` was not zero, an out of bound read would occur as the offset was not subtracted from the length to read. This has been added. A check to ensure that the offset does not exceed the length has also been added. ## Checklist - [x] I have linked to any relevant issues. - [x] I have commented my code, particularly in hard-to-understand areas. - [x] I have updated the documentation where relevant (API docs, the reference, and the Sway book). - [ ] If my change requires substantial documentation changes, I have [requested support from the DevRel team](https://github.com/FuelLabs/devrel-requests/issues/new/choose) - [x] I have added tests that prove my fix is effective or that my feature works. - [x] I have added (or requested a maintainer to add) the necessary `Breaking*` or `New Feature` labels where relevant. - [x] I have done my best to ensure that my PR adheres to [the Fuel Labs Code Review Standards](https://github.com/FuelLabs/rfcs/blob/master/text/code-standards/external-contributors.md). - [x] I have requested a review from the relevant team or maintainers. --------- Co-authored-by: K1-R1 <[email protected]> Co-authored-by: Joshua Batty <[email protected]>
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