Use After Free Affecting kernel package, versions <0:4.14.262-200.489.amzn2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.04% (6th percentile)

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  • Snyk IDSNYK-AMZN2-KERNEL-7678808
  • published14 Aug 2024
  • disclosed19 Jun 2024

Introduced: 19 Jun 2024

CVE-2021-47600  (opens in a new tab)
CWE-416  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.262-200.489.amzn2 or higher.
This issue was patched in ALAS2-2022-1749.

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.

In the Linux kernel, the following vulnerability has been resolved:

dm btree remove: fix use after free in rebalance_children()

Move dm_tm_unlock() after dm_tm_dec().

CVSS Scores

version 3.1