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.

References

https://lore.kernel.org/linux-xfs/[email protected]/

https://lore.kernel.org/linux-xfs/[email protected]

https://github.com/torvalds/linux/commit/1fb254aa983bf190cfd685d40c64a480a9bafaee

https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1fb254aa983bf190cfd685d40c64a480a9bafaee

https://lists.fedoraproject.org/archives/list/[email protected]/message/T4JZ6AEUKFWBHQAROGMQARJ274PQP2QP/

https://lists.fedoraproject.org/archives/list/[email protected]/message/O3RUDQJXRJQVGHCGR4YZWTQ3ECBI7TXH/

https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html

https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html

http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html

https://usn.ubuntu.com/4144-1/

https://security.netapp.com/advisory/ntap-20191004-0001/

https://usn.ubuntu.com/4147-1/

https://support.f5.com/csp/article/K32592426?utm_source=f5support&utm_medium=RSS

Details

Risk Information

CVSS v2

CVSS v3