NULL Pointer Dereference Affecting amazon-cloudwatch-agent package, versions <0:1.300069.1-1.amzn2


Severity

Recommended
medium

Based on Amazon Linux security rating.

Threat Intelligence

Social Trends
EPSS
0.5% (41st percentile)

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  • Snyk IDSNYK-AMZN2-AMAZONCLOUDWATCHAGENT-18523622
  • published5 Aug 2026
  • disclosed22 May 2026

Introduced: 22 May 2026

CVE-2026-39835  (opens in a new tab)
CWE-476  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 amazon-cloudwatch-agent to version 0:1.300069.1-1.amzn2 or higher.
This issue was patched in ALAS2-2026-3844.

NVD Description

Note: Versions mentioned in the description apply only to the upstream amazon-cloudwatch-agent package and not the amazon-cloudwatch-agent package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

SSH servers which use CertChecker as a public key callback without setting IsUserAuthority or IsHostAuthority could be caused to panic by a client presenting a certificate. CertChecker now returns an error instead of panicking when these callbacks are nil.

References

CVSS Base Scores

version 3.1