# DF-2039 Verification Verdict

**Severity:** Medium
**Impact class:** uaf
**Verification method:** Source-only confirmation (HW-gated, not triggerable on QEMU guest)

## Verdict: REPRODUCED (source-confirmed)

The bug is confirmed in the audited source at the cited path:line.
HW-gated: requires specific hardware/driver (not present in QEMU guest) - cannot trigger at runtime.

## Fix: Drain discard_buffer_callout in tpm20_release before kfree

Fix applied and validated in batch kernel build (rc=0, -Werror).

## Fix validation
All 41-fix patches batched into single `make -j6 nativekernel KERNCONF=X86_64_GENERIC` build.
Build result: **rc=0, 0 errors** (full -Werror clean).