CVE ID:	CVE-2019-15538
Description:	An issue was discovered in xfs_setattr_nonsize in fs/xfs/xfs_iops.c in the Linux kernel through 5.2.9. XFS partially wedges when a chgrp fails on account of 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.
Test IDs:	None available
Cross References:	Common Vulnerability Exposure (CVE) ID: CVE-2019-15538 https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/T4JZ6AEUKFWBHQAROGMQARJ274PQP2QP/ https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/O3RUDQJXRJQVGHCGR4YZWTQ3ECBI7TXH/ https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1fb254aa983bf190cfd685d40c64a480a9bafaee https://github.com/torvalds/linux/commit/1fb254aa983bf190cfd685d40c64a480a9bafaee https://lore.kernel.org/linux-xfs/20190823035528.GH1037422@magnolia/ https://lore.kernel.org/linux-xfs/20190823192433.GA8736@eldamar.local https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html SuSE Security Announcement: openSUSE-SU-2019:2173 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html SuSE Security Announcement: openSUSE-SU-2019:2181 (Google Search) http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html https://usn.ubuntu.com/4144-1/ https://usn.ubuntu.com/4147-1/