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.

Category

7.5
CVSS
Severity: High
CVSS 3.1 •
CVSS 2.0 •
EPSS 13.46% Top 10%
Vendor Advisory fedoraproject.org Vendor Advisory fedoraproject.org Vendor Advisory opensuse.org Vendor Advisory opensuse.org Vendor Advisory ubuntu.com Vendor Advisory ubuntu.com Vendor Advisory kernel.org
Affected: n/a n/a
Published at:
Updated at:

References

Link Tags
https://lore.kernel.org/linux-xfs/20190823035528.GH1037422%40magnolia/
https://lore.kernel.org/linux-xfs/20190823192433.GA8736%40eldamar.local
https://github.com/torvalds/linux/commit/1fb254aa983bf190cfd685d40c64a480a9bafaee third party advisory patch
https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/?id=1fb254aa983bf190cfd685d40c64a480a9bafaee patch vendor advisory mailing list
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4JZ6AEUKFWBHQAROGMQARJ274PQP2QP/ vendor advisory
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/O3RUDQJXRJQVGHCGR4YZWTQ3ECBI7TXH/ vendor advisory
https://lists.debian.org/debian-lts-announce/2019/09/msg00014.html third party advisory mailing list
https://lists.debian.org/debian-lts-announce/2019/09/msg00015.html third party advisory mailing list
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00064.html vendor advisory mailing list third party advisory
http://lists.opensuse.org/opensuse-security-announce/2019-09/msg00066.html vendor advisory mailing list third party advisory
https://usn.ubuntu.com/4144-1/ third party advisory vendor advisory
https://security.netapp.com/advisory/ntap-20191004-0001/ third party advisory
https://usn.ubuntu.com/4147-1/ third party advisory vendor advisory
https://support.f5.com/csp/article/K32592426?utm_source=f5support&%3Butm_medium=RSS

Frequently Asked Questions

What is the severity of CVE-2019-15538?
CVE-2019-15538 has been scored as a high severity vulnerability.
How to fix CVE-2019-15538?
To fix CVE-2019-15538, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2019-15538 being actively exploited in the wild?
It is possible that CVE-2019-15538 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~13% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
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