Out-of-bounds Write Affecting openjdk-21-openj9 package, versions <0.59.0-r1


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
1.17% (65th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-OPENJDK21OPENJ9-17197904
  • published6 Jun 2026
  • disclosed12 Jun 2025

Introduced: 12 Jun 2025

CVE-2025-6021  (opens in a new tab)
CWE-787  (opens in a new tab)

How to fix?

Upgrade Chainguard openjdk-21-openj9 to version 0.59.0-r1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream openjdk-21-openj9 package and not the openjdk-21-openj9 package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

A flaw was found in libxml2's xmlBuildQName function, where integer overflows in buffer size calculations can lead to a stack-based buffer overflow. This issue can result in memory corruption or a denial of service when processing crafted input.

CVSS Base Scores

version 3.1