Resource Exhaustion Affecting kernel-debuginfo package, versions <0:4.14.143-91.122.amzn1


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
1.2% (86th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNELDEBUGINFO-1718701
  • published27 Sept 2021
  • disclosed25 Aug 2019

Introduced: 25 Aug 2019

CVE-2019-15538  (opens in a new tab)
CWE-400  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel-debuginfo to version 0:4.14.143-91.122.amzn1 or higher.
This issue was patched in ALAS-2019-1281.

NVD Description

Note: Versions mentioned in the description apply only to the upstream kernel-debuginfo package and not the kernel-debuginfo package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2018.03 relevant fixed versions and status.

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

CVSS Scores

version 3.1