Conversation
Signed-off-by: xermicus <cyrill@parity.io>
xermicus
changed the title
kvpanch
approved these changes
Jan 12, 2026
CHANGELOG.md
Outdated
| Supported `polkadot-sdk` rev: `unstable2507` | ||
|
|
||
| ### Fixed | ||
| - OOB access in call data load and copy should always produce zero values instead of consuming all gas. |
Contributor
There was a problem hiding this comment.
"call data load" -> calldataload ?
Contributor
There was a problem hiding this comment.
Can you please also elaborate here why this is expected to be zeroed ? Is there any spec point that covers this corner case ?
Member
Author
There was a problem hiding this comment.
Yes it's as per spec. The canonical spec is (or was? I heard it's no longer updated) the yellow paper.
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
3 participants
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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
The OOB logic is implemented in the runtime but truncation circumvented it.
Closes #263