Ubuntu alert USN-8460-1 (libxml2)

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[USN-8460-1] libxml2 vulnerabilities
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Mon, 22 Jun 2026 21:19:56 +0000
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==========================================================================
Ubuntu Security Notice USN-8460-1
June 22, 2026

libxml2 vulnerabilities
==========================================================================

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

- Ubuntu 26.04 LTS
- Ubuntu 25.10

Summary:

Several security issues were fixed in libxml2.

Software Description:
- libxml2: GNOME XML library

Details:

It was discovered that libxml2 did not properly release memory allocated in
the xmllint utility. An attacker could possibly use this issue to cause a
denial of service. (CVE-2026-1757)

A type confusion vulnerability was found in libxml2 when processing a
specially crafted XML document. A remote attacker could possibly use this
issue to cause a denial of service. (CVE-2026-6732)

Update instructions:

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

Ubuntu 26.04 LTS
  libxml2-16                      2.15.2+dfsg-0.1ubuntu0.1
  libxml2-dev                     2.15.2+dfsg-0.1ubuntu0.1
  libxml2-source                  2.15.2+dfsg-0.1ubuntu0.1
  libxml2-utils                   2.15.2+dfsg-0.1ubuntu0.1
  python3-libxml2                 2.15.2+dfsg-0.1ubuntu0.1

Ubuntu 25.10
  libxml2-16                      2.14.5+dfsg-0.2ubuntu0.2
  libxml2-dev                     2.14.5+dfsg-0.2ubuntu0.2
  libxml2-utils                   2.14.5+dfsg-0.2ubuntu0.2
  python3-libxml2                 2.14.5+dfsg-0.2ubuntu0.2

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

References:
  https://ubuntu.com/security/notices/USN-8460-1
  CVE-2026-1757, CVE-2026-6732

Package Information:
  https://launchpad.net/ubuntu/+source/libxml2/2.15.2+dfsg-...
  https://launchpad.net/ubuntu/+source/libxml2/2.14.5+dfsg-...


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