Controlled read + arbitrary read/write on Chromium 149.0.7827.102 (x64 ASAN).

chrome.stderr.log is the full, unmodified run output. It contains, in order:
  RUN119_ADDROF_LEAK / RUN120_ARW_READ_BEFORE/WRITE/READ_AFTER/CONTROL / RUN122  -> arbitrary read/write
    (victim BigUint64Array byteLength changes 8 -> 64, visible from JavaScript)
  RUN121_..._kind=forged_read64 value=0x414243444546                            -> controlled read armed
  AddressSanitizer heap-buffer-overflow READ + Received signal 11 SEGV_ACCERR 7a9c43444545
    (the load faults at the chosen address after V8 cage decoding)

asan_crash=forged_read64, asan_crash_value=0x414243444546.
