Unchecked Input for Loop Condition Affecting microshift-greenboot package, versions <0:4.18.54-202608211117.p0.g8eb6c29.assembly.4.18.54.el9


Severity

Recommended
0.0
high
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.78% (52nd percentile)

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  • Snyk IDSNYK-RHEL9-MICROSHIFTGREENBOOT-19348336
  • published27 Aug 2026
  • disclosed7 May 2026

Introduced: 7 May 2026

CVE-2026-39820  (opens in a new tab)
CWE-606  (opens in a new tab)

How to fix?

Upgrade RHEL:9 microshift-greenboot to version 0:4.18.54-202608211117.p0.g8eb6c29.assembly.4.18.54.el9 or higher.
This issue was patched in RHSA-2026:57914.

NVD Description

Note: Versions mentioned in the description apply only to the upstream microshift-greenboot package and not the microshift-greenboot package as distributed by RHEL. See How to fix? for RHEL:9 relevant fixed versions and status.

Well-crafted inputs reaching ParseAddress, ParseAddressList, and ParseDate were able to trigger excessive CPU exhaustion and memory allocations.

CVSS Base Scores

version 3.1