In rw_i93_send_to_upper of rw_i93.cc, there is a possible out of bounds write due to an integer overflow. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
The product performs a calculation that can produce an integer overflow or wraparound when the logic assumes that the resulting value will always be larger than the original value. This occurs when an integer value is incremented to a value that is too large to store in the associated representation. When this occurs, the value may become a very small or negative number.
| Link | Tags |
|---|---|
| https://android.googlesource.com/platform/system/nfc/+/907d17eeefec6f672ea824e126406e6d8f6b56d8 | patch |
| https://source.android.com/security/bulletin/2023-07-01 | patch vendor advisory |