Packages
- libxml2 - GNOME XML library
Details
It was discovered that libxml2 incorrectly handled maliciously crafted SGML
catalog files. An attacker could possibly use this issue to cause libxml2
to consume excessive resources, leading to a denial of service.
(CVE-2025-8732)
It was discovered that libxml2 incorrectly handled recursive include
directories with the RelaxNG parser. An attacker could possibly use this
issue to cause libxml2 to consume excessive resources, leading to a denial
of service. (CVE-2026-0989)
Nick Wellnhofer discovered that libxml2 incorrectly parsed catalogs with
self-referencing URI delegates. An attacker could possibly use this issue
to cause libxml2 to consume excessive resources, leading to a denial of
service. (CVE-2026-0990)
Nick Wellnhofer discovered that libxml2 inefficiently parsed catalogs
linked with repeating...
It was discovered that libxml2 incorrectly handled maliciously crafted SGML
catalog files. An attacker could possibly use this issue to cause libxml2
to consume excessive resources, leading to a denial of service.
(CVE-2025-8732)
It was discovered that libxml2 incorrectly handled recursive include
directories with the RelaxNG parser. An attacker could possibly use this
issue to cause libxml2 to consume excessive resources, leading to a denial
of service. (CVE-2026-0989)
Nick Wellnhofer discovered that libxml2 incorrectly parsed catalogs with
self-referencing URI delegates. An attacker could possibly use this issue
to cause libxml2 to consume excessive resources, leading to a denial of
service. (CVE-2026-0990)
Nick Wellnhofer discovered that libxml2 inefficiently parsed catalogs
linked with repeating nextCatalog elements. An attacker could possibly use
this issue to cause libxml2 to use excessive resources, leading to a denial
of service. (CVE-2026-0992)
Update instructions
In general, a standard system update will make all the necessary changes.
Learn more about how to get the fixes.The problem can be corrected by updating your system to the following package versions:
| Ubuntu Release | Package Version | ||
|---|---|---|---|
| 25.10 questing | libxml2-16 – 2.14.5+dfsg-0.2ubuntu0.1 | ||
| 24.04 LTS noble | libxml2 – 2.9.14+dfsg-1.3ubuntu3.7 | ||
| 22.04 LTS jammy | libxml2 – 2.9.13+dfsg-1ubuntu0.11 | ||
| 20.04 LTS focal | libxml2 – 2.9.10+dfsg-5ubuntu0.20.04.10+esm4 | ||
| 18.04 LTS bionic | libxml2 – 2.9.4+dfsg1-6.1ubuntu1.9+esm7 | ||
| 16.04 LTS xenial | libxml2 – 2.9.3+dfsg1-1ubuntu0.7+esm12 | ||
| 14.04 LTS trusty | libxml2 – 2.9.1+dfsg1-3ubuntu4.13+esm11 | ||
Reduce your security exposure
Ubuntu Pro provides ten-year security coverage to 25,000+ packages in Main and Universe repositories, and it is free for up to five machines.