USN-7424-1: Expat vulnerability

8 April 2025

Expat could be made to crash if it received specially crafted input.

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Releases

Packages

  • expat - XML parsing C library

Details

It was discovered that Expat could crash due to stack overflow when
processing XML documents with deeply nested entity references. If a user
or automated system were tricked into processing specially crafted XML
input, an attacker could use this issue to cause a denial of service.

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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.

Learn more about Ubuntu Pro

Update instructions

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

Ubuntu 24.10
Ubuntu 24.04
Ubuntu 22.04

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

References

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Further reading