Improper Update of Reference Count Affecting kernel package, versions <0:4.14.290-217.505.amzn2


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (16th percentile)

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  • Snyk IDSNYK-AMZN2-KERNEL-2988082
  • published20 Aug 2022
  • disclosed27 Jul 2022

Introduced: 27 Jul 2022

CVE-2022-36879  (opens in a new tab)
CWE-911  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 kernel to version 0:4.14.290-217.505.amzn2 or higher.
This issue was patched in ALAS2-2022-1833.

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.

An issue was discovered in the Linux kernel through 5.18.14. xfrm_expand_policies in net/xfrm/xfrm_policy.c can cause a refcount to be dropped twice.

CVSS Scores

version 3.1