In cpm_fwtp_msg_handler of cpm/google/lib/tracepoint/cpm_fwtp_ipc.c, there is a possible memory overwrite due to improper input validation. 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/docs/security/bulletin/pixel/2026/2026-01-01