[ARROW-8728] [C++] Bitmap operation may cause buffer overflow

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.17.1, 1.0.0
• Component/s: C++
• Labels: pull-request-available
• External issue URL: https://github.com/apache/arrow/issues/24881
• Assignee: Yibo Cai
• Reporter: Yibo Cai
• Created: 07/May/20 09:55
• Updated: 11/Jan/23 08:02
• Resolved: 07/May/20 12:28

Description

Happen to find this issue when refining bitmap operation, this code may overflow out buffer. Should be "(length + left_offset % 8)";
Improve unit test to test large offset values can trigger the bug.

Issue Links

• links to: GitHub Pull Request #7123