In com_android_internal_os_ZygoteCommandBuffer_nativeForkRepeatedly of com_android_internal_os_ZygoteCommandBuffer.cpp, there is a possible method to perform arbitrary code execution in any app zygote processes due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
The product uses an expression in which operator precedence causes incorrect logic to be used.