# DF-1878 VERDICT

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

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

**Mechanism:** radeon_dp_work_func L98-109 computes mode_config=&dev->mode_config L103 then list_for_each_entry(connector,&mode_config->connector_list,head) L107 with NO mutex_lock(&mode_config->mutex). Inline comme

**Citation:** `sys/dev/drm/radeon/radeon_irq_kms.c:98-108`

**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.