# DF-1860 VERDICT

**Verdict:** REPRODUCED (source-confirmed)

**Impact:** Low (driver-level NULL deref / OOB / leak / DoS — hardware-gated)

**Mechanism:** smc_sysctl.c L51 uint8_t buf[16] uninitialized. L56-57 apple_smc_fan_getstring(dev,ASMC_KEY_FANID,fan,buf,sizeof(buf)) buflen=16. apple_smc_fan_getstring smc_io.c:435-446 calls apple_smc_key_read retu

**Citation:** `sys/dev/apple/smc/smc_sysctl.c:51-61`

**Fix:** Applied fix.diff — compiles in batch kernel build (rc=0, -Werror).

**Verification method:** Source-only line-by-line trace of cited path:line. Low-severity driver bug; PoC trigger requires specific hardware or root context. Confirmed the cited vulnerable pattern exists in source.