Use After Free The advisory has been revoked - it doesn't affect any version of package libxml2 (opens in a new tab)

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Snyk IDSNYK-UBUNTU2004-LIBXML2-13703690
published26 Nov 2025
disclosed10 Jul 2025

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Introduced: 10 Jul 2025

CVE-2025-7425 (opens in a new tab) CWE-416 (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream libxml2 package and not the libxml2 package as distributed by Ubuntu.

A flaw was found in libxslt where the attribute type, atype, flags are modified in a way that corrupts internal memory management. When XSLT functions, such as the key() process, result in tree fragments, this corruption prevents the proper cleanup of ID attributes. As a result, the system may access freed memory, causing crashes or enabling attackers to trigger heap corruption.