Packages
- expat - XML parsing C library
Details
It was discovered that Expat incorrectly handled memory when parsing certain
XML files. An attacker could possibly use this issue to cause a denial of
service. This issue was only addressed in Ubuntu 25.10. (CVE-2025-59375)
It was discovered that Expat incorrectly handled the initialization of parsers
for external entities. An attacker could possibly use this issue to cause a
denial of service. (CVE-2026-24515)
It was discovered that Expat incorrectly handled integer calculations when
allocating memory for XML tags. An attacker could possibly use this issue to
cause a denial of service or execute arbitrary code. (CVE-2026-25210)
It was discovered that Expat incorrectly handled memory when parsing certain
XML files. An attacker could possibly use this issue to cause a denial of
service. This issue was only addressed in Ubuntu 25.10. (CVE-2025-59375)
It was discovered that Expat incorrectly handled the initialization of parsers
for external entities. An attacker could possibly use this issue to cause a
denial of service. (CVE-2026-24515)
It was discovered that Expat incorrectly handled integer calculations when
allocating memory for XML tags. An attacker could possibly use this issue to
cause a denial of service or execute arbitrary code. (CVE-2026-25210)
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 | expat – 2.7.1-2ubuntu0.2 | ||
| libexpat1 – 2.7.1-2ubuntu0.2 | |||
| 22.04 LTS jammy | expat – 2.4.7-1ubuntu0.7 | ||
| libexpat1 – 2.4.7-1ubuntu0.7 | |||
| 20.04 LTS focal | expat – 2.2.9-1ubuntu0.8+esm1 | ||
| libexpat1 – 2.2.9-1ubuntu0.8+esm1 | |||
| 18.04 LTS bionic | expat – 2.2.5-3ubuntu0.9+esm3 | ||
| libexpat1 – 2.2.5-3ubuntu0.9+esm3 | |||
| 16.04 LTS xenial | expat – 2.1.0-7ubuntu0.16.04.5+esm11 | ||
| lib64expat1 – 2.1.0-7ubuntu0.16.04.5+esm11 | |||
| libexpat1 – 2.1.0-7ubuntu0.16.04.5+esm11 | |||
| 14.04 LTS trusty | expat – 2.1.0-4ubuntu1.4+esm11 | ||
| lib64expat1 – 2.1.0-4ubuntu1.4+esm11 | |||
| libexpat1 – 2.1.0-4ubuntu1.4+esm11 | |||
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