Multiple security vulnerabilities have been identified in Xwayland, an X server for running X clients under Wayland, including stack-based buffer overflows and use-after-free flaws. These issues affect versions prior to xwayland-24.1.12 and have been fixed in that release. The vulnerabilities include a font alias stack buffer overflow, several use-after-free conditions in XSYNC, and multiple stack buffer overflows related to XKB key types and set map requests. The CVSS score is 7.8, indicating high severity.