Out-of-bounds Write Affecting qt6-qtwebengine package, versions <6.8.3-r5


Severity

Recommended
0.0
high
0
10

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Threat Intelligence

EPSS
0.38% (59th percentile)

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  • Snyk IDSNYK-ALPINE322-QT6QTWEBENGINE-13782952
  • published31 Oct 2025
  • 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 Alpine:3.22 qt6-qtwebengine to version 6.8.3-r5 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream qt6-qtwebengine package and not the qt6-qtwebengine package as distributed by Alpine. See How to fix? for Alpine:3.22 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