[LU-13064] Check permissions when accessing changelogs

• Type: Bug
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.14.0
• Labels: LTS12 patch sec
• Severity: 3
• Assignee: Sebastien Buisson
• Reporter: Sebastien Buisson

Description

root permissions should be checked when reading or clearing changelogs from clients. In particular, if root is squashed via a nodemap entry, it should not be allowed to access changelogs.

I will push a patch to implement this check.