CVE-2022-25314

An integer overflow flaw was found in expat. This issue affects the encoding name parameter at the parser creation time, which is often hard-coded (rather than user input), takes a value in the gigabytes to trigger, and on a 64-bit machine. This flaw can cause a denial of service.

This flaw has been rated as having a severity of Moderate. The encoding name parameter is often hard-coded (rather than user input) and it would take a value in the gigabytes for the name to trigger this issue. The versions of expat as shipped with Red Hat Enterprise Linux 6 and 7 are not affected by this flaw as they did not include the vulnerable copyString() function.

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

There is no known mitigation other than restricting applications using the expat library from processing untrusted XML content.