Benjamin Moody

**Name of the Vulnerable Software and Affected Versions** Linux kernel versions through 5.2.9 **Description** An issue was discovered in `xfs setattr nonsize` in `fs/xfs/xfs iops.c`. XFS partially wedges when a `chgrp` fails due to being out of disk quota. `xfs setattr nonsize` is failing to unlock the `ILOCK` after the `xfs qm vop chown reserve` call fails. This is primarily a local DoS attack vector, but it might result as well in remote DoS if the XFS filesystem is exported, for instance, via NFS. **Recommendations** For Linux kernel versions through 5.2.9, consider upgrading to a version that includes a fix for this issue, as no specific workaround is provided for these versions. At the moment, there is no information about a newer version that contains a fix for this vulnerability.