[ARROW-10373] [C++] ValidateFull() does not validate null_count

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 6.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/26359
• Assignee: Antoine Pitrou
• Reporter: Derek Denny-Brown
• Created: 22/Oct/20 22:55
• Updated: 11/Jan/23 08:12
• Resolved: 09/Aug/21 18:53

Description

It is possible to corrupt a serialized record batch such that the null_count of the parsed result is invalid.  Attached is a repro where the the parsed null_count = -2, but ValidateFull returns success.  I would expect ValidateFull to verify the null_count against the serialized columns.

Issue Links

• links to: GitHub Pull Request #10871