In multiple functions of NotificationManagerService.java, there is a possible way to bypass the per-package channel limits causing resource exhaustion. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
https://source.android.com/security/bulletin/2025-12-01
https://android.googlesource.com/platform/frameworks/base/+/08a0766708db2071d9b8b65abf40d7e8057daaa1