In multiple functions of ashmem-dev.cpp, there is a possible missing seal due to a heap buffer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
https://source.android.com/security/bulletin/2024-02-01
https://android.googlesource.com/platform/system/core/+/46d46dc46446f14f26fbe8fb102dd36c1dfc1229