Use After Free Affecting kernel package, versions <0:4.14.158-129.185.amzn2


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
2.08% (80th percentile)

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  • Snyk IDSNYK-AMZN2-KERNEL-7172605
  • published31 May 2024
  • disclosed12 Dec 2019

Introduced: 12 Dec 2019

CVE-2019-19767  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.158-129.185.amzn2 or higher.
This issue was patched in ALAS2-2024-2560.

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:2 relevant fixed versions and status.

The Linux kernel before 5.4.2 mishandles ext4_expand_extra_isize, as demonstrated by use-after-free errors in __ext4_expand_extra_isize and ext4_xattr_set_entry, related to fs/ext4/inode.c and fs/ext4/super.c, aka CID-4ea99936a163.

CVSS Base Scores

version 3.1