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Ubuntu Security Notice USN-7467-2
April 28, 2025

libxml2 vulnerabilities
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A security issue affects these releases of Ubuntu and its derivatives:

- Ubuntu 18.04 LTS
- Ubuntu 16.04 LTS

Summary:

Several security issues were fixed in libxml2.

Software Description:
- libxml2: GNOME XML library

Details:

USN-7467-1 fixed several vulnerabilities in libxml2. This update provides
the corresponding update for Ubuntu 16.04 LTS and Ubuntu 18.04 LTS.

Original advisory details:

 It was discovered that the libxml2 Python bindings incorrectly handled
 certain return values. An attacker could possibly use this issue to cause
 libxml2 to crash, resulting in a denial of service. (CVE-2025-32414)

 It was discovered that libxml2 incorrectly handled certain memory
 operations. A remote attacker could possibly use this issue to cause
 libxml2 to crash, resulting in a denial of service. (CVE-2025-32415)

Update instructions:

The problem can be corrected by updating your system to the following
package versions:

Ubuntu 18.04 LTS
  libxml2                         2.9.4+dfsg1-6.1ubuntu1.9+esm3
                                  Available with Ubuntu Pro
  python-libxml2                  2.9.4+dfsg1-6.1ubuntu1.9+esm3
                                  Available with Ubuntu Pro
  python3-libxml2                 2.9.4+dfsg1-6.1ubuntu1.9+esm3
                                  Available with Ubuntu Pro

Ubuntu 16.04 LTS
  libxml2                         2.9.3+dfsg1-1ubuntu0.7+esm8
                                  Available with Ubuntu Pro
  python-libxml2                  2.9.3+dfsg1-1ubuntu0.7+esm8
                                  Available with Ubuntu Pro

In general, a standard system update will make all the necessary changes.

References:
  https://ubuntu.com/security/notices/USN-7467-2
  https://ubuntu.com/security/notices/USN-7467-1
  CVE-2025-32414, CVE-2025-32415