GH-1217: validate view data offsets in BaseVariableWidthViewVector - #1218
Open
Arawoof06 wants to merge 1 commit into
Open
GH-1217: validate view data offsets in BaseVariableWidthViewVector#1218Arawoof06 wants to merge 1 commit into
Arawoof06 wants to merge 1 commit into
Conversation
Copy link
Copy Markdown
Contributor
Sorry, something went wrong.
Arawoof06
requested review from
jbonofre,
laurentgo,
lidavidm and
wgtmac
as code owners
July 6, 2026 07:18
This comment has been minimized.
Copy link
Copy Markdown
Contributor
Author
|
Could a maintainer add the bug-fix label? The format check is failing on missing labels and I can't set it myself. |
Sorry, something went wrong.
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
Reviewers
2 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Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be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.
What's Changed
Utf8View and BinaryView values longer than 12 bytes live in a separate data buffer, with the data-buffer index and offset stored inline in the view; when a vector is read from an IPC stream those fields come from untrusted input. BaseVariableWidthViewVector dereferenced them without checking that the index is present or that offset+length stays inside the data buffer, so a crafted view reads past the buffer (and returns arbitrary native heap when arrow.enable_unsafe_memory_access is set). Routed every out-of-line dereference (get, getDataPointer, hashCode, copyFrom, splitAndTransfer) through one getValidatedDataBuffer check so a bad view is rejected at the source rather than in each caller.
Closes #1217.