CVE-2019-15538

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.

Summary:

Reference Links(if available):

https://lore.kernel.org/linux-xfs/20190823035528.GH1037422@magnolia/

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/

CVSS Score (if available)

v2: / MEDIUMAV:N/AC:L/Au:N/C:N/I:N/A:C

v3: / HIGHCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Links to Exploits(if available)

Tags: CVE, CVE-2019-15538, Mailing List, MISC, vulnerability

CVE-2019-15538

Summary:

Reference Links(if available):

CVSS Score (if available)

Links to Exploits(if available)

[CLOAK] – Ransomware Victim: Ne***********[.]de

[CLOAK] – Ransomware Victim: Fmp[.]gob[.]pe

[CLOAK] – Ransomware Victim: Kai*************[.]de

[QILIN] – Ransomware Victim: Compliance Solutions Inc

[INTERLOCK] – Ransomware Victim: City of Noblesville

Summary:

Reference Links(if available):

CVSS Score (if available)

Links to Exploits(if available)

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[CLOAK] – Ransomware Victim: Ne***********[.]de

[CLOAK] – Ransomware Victim: Fmp[.]gob[.]pe

[CLOAK] – Ransomware Victim: Kai*************[.]de

[QILIN] – Ransomware Victim: Compliance Solutions Inc

[INTERLOCK] – Ransomware Victim: City of Noblesville