# DF-1643 VERDICT

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

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

**Mechanism:** ata-all.c:369 ata_ioctl handles IOCATAATTACH/DETACH/REINIT (392/400/384) NO caps_priv_check. 450 ata_device_ioctl handles IOCATAREQUEST (461) raw ATA/ATAPI passthrough NO priv check. Sibling atapi-cd.

**Citation:** `sys/dev/disk/nata/ata-all.c:369-461`

**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.