Potential fix for code scanning alert no. 518: Incorrect conversion between integer types#2203
Merged
cb-github-robot merged 1 commit intomainfrom Nov 6, 2025
Conversation
…etween integer types Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com>
Member
Author
|
/approve |
Contributor
There was a problem hiding this comment.
Pull Request Overview
This PR adds bounds checking for the acceleratorCount field before conversion to uint8, preventing potential overflow issues when parsing CSV data.
Key changes:
- Added validation to ensure parsed accelerator count values fall within the valid
uint8range (0-255) - Out-of-bounds values are now set to a safe default of 0
💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.
| acceleratorCount = s | ||
| // Enforce bounds for uint8 before conversion | ||
| if s < 0 || s > 255 { | ||
| acceleratorCount = 0 // or choose another safe default, e.g., 255 |
There was a problem hiding this comment.
The comment suggests 'e.g., 255' as an alternative default, which creates ambiguity. Since 0 is already chosen as the default and is appropriate for invalid values (indicating no accelerators), the alternative suggestion should be removed to avoid confusion.
Suggested change
| acceleratorCount = 0 // or choose another safe default, e.g., 255 | |
| acceleratorCount = 0 // 0 is used as the default for invalid values (indicating no accelerators) |
This file contains hidden or 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
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
Potential fix for https://github.com/cloud-barista/cb-tumblebug/security/code-scanning/518
The best way to fix this is to check that the parsed value of
acceleratorCountis within the valid bounds for theuint8type, i.e., in the interval [0, 255], before converting and assigning tospecInfo.AcceleratorCount. If the parsed value is out of bounds, set it to a safe default (for example, zero) or handle it as appropriate for your application context (could log a warning and discard, or set to max value, etc.).Change required: In src/core/resource/spec.go, after line 976 (after parsing and setting
acceleratorCount), add a bounds check to make sureacceleratorCountis within [0, 255]. Then, in the assignment tospecInfo.AcceleratorCount, you can safely cast touint8.No additional imports are necessary, as [0, 255] are constant values.
Suggested fixes powered by Copilot Autofix. Review carefully before merging.