MooseFS 4.58.3 is a maintenance release focused on improving stability, correctness, and security.
It contains no new features but includes a few important fixes identified by the community and during internal QA.
Master Server & tools
Fixed: reversible storage class option validation
A community contributor, @POPSuL, reported that the -o parameter incorrectly accepted a standalone R without any accompanying A, C, or M mode.
This has now been corrected to enforce proper argument validation.
For more information, please refer to Discussion #670.
Daemons
Fixed: clearing auxiliary groups before setuid
A small security issue flagged by rpmlint has been resolved.
When dropping privileges from root to a less-privileged user, daemons now explicitly clear all auxiliary groups before calling setuid, ensuring safer privilege transitions.
libmfsio
Fixed: descriptor resize function
A rare bug in the descriptor resizing logic has been corrected.