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CVE-2016-4470 Affecting kernel package, versions <0:4.4.15-25.57.amzn1

Severity

 Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.05% (19th percentile)

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  • Snyk IDSNYK-AMZN201803-KERNEL-1699551
  • published27 Sept 2021
  • disclosed27 Jun 2016
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Introduced: 27 Jun 2016

CVE-2016-4470  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2018.03 kernel to version 0:4.4.15-25.57.amzn1 or higher.
This issue was patched in ALAS-2016-726.

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.

The key_reject_and_link function in security/keys/key.c in the Linux kernel through 4.6.3 does not ensure that a certain data structure is initialized, which allows local users to cause a denial of service (system crash) via vectors involving a crafted keyctl request2 command.

References