Improper Certificate Validation Affecting runc package, versions <0:1.4.3-1.amzn2023.0.3


Severity

Recommended
0.0
medium
0
10

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.3% (23rd percentile)

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  • Snyk IDSNYK-AMZN2023-RUNC-21706213
  • published25 Oct 2026
  • disclosed21 Oct 2026

Introduced: 21 Oct 2026

NewCVE-2026-111943  (opens in a new tab)
CWE-295  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2023 runc to version 0:1.4.3-1.amzn2023.0.3 or higher.
This issue was patched in ALAS2023-2026-3323.

NVD Description

Note: Versions mentioned in the description apply only to the upstream runc package and not the runc package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2023 relevant fixed versions and status.

On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in crypto/x509 to return an error when calling Verify with any of the known intermediate certificates that are no longer considered to be trustworthy.

CVSS Base Scores

version 3.1