The commit diff shows critical changes in session.rs where temporary CStrings were being used to get raw pointers that could be invalidated. The vulnerability manifests in two session-related functions that passed string pointers to SQLite API calls without maintaining ownership of the underlying memory. The patch replaces these with SmallCString (which has different lifetime management) and explicitly stores the string objects before pointer extraction, directly addressing the use-after-free scenario described in CVE-2020-35873.