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CVE-2019-15538

HIGHCVSS 7.5/10EPSS 3.92%

Last modified

CVE-2019-15538 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. 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. EPSS estimates a 3.92% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.5/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS Probability
3.92%

89.0th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
LinuxLinux Kernel>= 4.7, < 4.9.191
LinuxLinux Kernel>= 4.14, < 4.14.141
LinuxLinux Kernel>= 4.19, < 4.19.69
LinuxLinux Kernel>= 5.2, < 5.2.11
LinuxLinux Kernel5.3
CanonicalUbuntu Linux16.04
CanonicalUbuntu Linux18.04
CanonicalUbuntu Linux19.04
NetappData Availability ServicesAll versions
NetappHci Management NodeAll versions
NetappSolidfireAll versions
NetappAff A700s FirmwareAll versions
NetappH300s FirmwareAll versions
NetappH500s FirmwareAll versions
NetappH700s FirmwareAll versions
NetappH300e FirmwareAll versions
NetappH500e FirmwareAll versions
NetappH700e FirmwareAll versions
NetappH410s FirmwareAll versions
NetappH410c FirmwareAll versions
NetappH610s FirmwareAll versions
OpensuseLeap15.0
OpensuseLeap15.1
DebianDebian Linux8.0
FedoraprojectFedora29
FedoraprojectFedora30

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is 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.
How severe is CVE-2019-15538?
CVE-2019-15538 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 3.92% probability of exploitation in the next 30 days.
How do I fix CVE-2019-15538?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

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Source: NVD / NIST