Out-of-bounds Write Affecting kernel package, versions <0:4.14.181-108.257.amzn1


Severity

Recommended
0.0
high
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.1% (43rd percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1723356
  • published27 Sept 2021
  • disclosed27 Nov 2019

Introduced: 27 Nov 2019

CVE-2019-19319  (opens in a new tab)
CWE-787  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:4.14.181-108.257.amzn1 or higher.
This issue was patched in ALAS-2020-1377.

NVD Description

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

In the Linux kernel before 5.2, a setxattr operation, after a mount of a crafted ext4 image, can cause a slab-out-of-bounds write access because of an ext4_xattr_set_entry use-after-free in fs/ext4/xattr.c when a large old_size value is used in a memset call, aka CID-345c0dbf3a30.

CVSS Scores

version 3.1