An out-of-bounds read was addressed with improved bounds checking. This issue is fixed in macOS Sonoma 14.2, macOS Ventura 13.6.3, macOS Monterey 12.7.2. A user may be able to cause unexpected app termination or arbitrary code execution.
https://support.apple.com/en-us/HT214038
https://support.apple.com/en-us/HT214037
https://support.apple.com/en-us/HT214036
http://seclists.org/fulldisclosure/2023/Dec/9