Affected: Ubuntu:24.04:LTS: libsoup3, Ubuntu:25.10: libsoup3, Ubuntu:26.04:LTS: libsoup3

A flaw was found in libsoup, a library for handling HTTP requests. This vulnerability, known as a Use-After-Free, occurs in the HTTP/2 server implementation. A remote attacker can exploit this by sending specially crafted HTTP/2 requests that cause authentication failures. This can lead to the application attempting to access memory that has already been freed, potentially causing application instability or crashes, resulting in a Denial of Service (DoS).