# DF-1916 VERDICT

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

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

**Mechanism:** All synchronization is crit_enter/crit_exit which on DFly is per-CPU only blocks interrupts on issuing CPU. ida_intr registered via bus_setup_intr ida_pci.c:280-281 dispatched on ANY CPU. Concurrent S

**Citation:** `sys/dev/raid/ida/ida.c:118-536`

**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.