In multiple locations, there is a possible way to inject keystrokes due to improper input validation. This could lead to remote (proximal/adjacent) escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
android.googlesource.com/platform/packages/modules/Bluetooth/+/25a7d9aaceea0f7d6cb4ae3da5aa66efb0bc7db8
android.googlesource.com/platform/packages/modules/Bluetooth/+/5673b3c6bbe8c6c9edb8afb5e9499dc3a41d3943
android.googlesource.com/platform/packages/modules/Bluetooth/+/9194524a92e0f5859caeab1ff487d21d9b513d0b
android.googlesource.com/platform/packages/modules/Bluetooth/+/a99edb35d6c044dbd607a74b88102bf2f36d5ef5
android.googlesource.com/platform/packages/modules/Bluetooth/+/f4e439c22354f0aa868a982bc88bcc9de3bc37f7
source.android.com/security/bulletin/2023-12-01