# DF-1866 VERDICT

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

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

**Mechanism:** ipmi_kcs_probe_align L527/536/566/573/586/594 while(status&KCS_STATUS_IBF){DELAY(100);status=INB(KCS_CTL_STS);} and while(!(status&KCS_STATUS_OBF)) loops lack the ticks-start<MAX_TIMEOUT guard that kc

**Citation:** `sys/dev/misc/ipmi/ipmi_kcs.c:527-595`

**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.