# DF-1856 VERDICT

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

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

**Mechanism:** intel_dp_create_fake_mst_encoder L541 kzalloc(sizeof(*intel_mst),GFP_KERNEL) if(!intel_mst) return NULL L543-544. Caller intel_dp_create_fake_mst_encoders L579-581 for_each_pipe intel_dp->mst_encoders

**Citation:** `sys/dev/drm/i915/intel_dp_mst.c:541-595`

**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.