Ext4Kit is beta software that reads and writes real ext4 volumes. A bug here can corrupt a filesystem, so data-integrity reports are treated with the same priority as security vulnerabilities.

Only the latest release (and main) receive fixes. There are no backports while the project is pre-1.0.

Please report privately first — do not open a public issue for anything that could destroy data or expose a user's disk contents:

• Preferred: GitHub Security Advisories
• Or email: ray@million.dev

To help reproduce, include where possible:

• macOS version and the Ext4Kit version (or commit)
• How the volume was created (mkfs.ext4 flags / newfs_fskit command), and its feature flags (dumpe2fs -h output)
• The exact operations that triggered the problem
• e2fsck -fn output from a Linux box against the affected image
• A minimal disk image that reproduces it, if you can share one safely

Ext4Kit is distributed under the terms in LICENSE and THIRD_PARTY_LICENSES.md with no warranty of any kind. Back up important data and test on a scratch volume before trusting it with anything you can't afford to lose.