# DF-1956 VERDICT

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

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

**Mechanism:** psp_v10_0_compare_sram_data L435 while(!ucode_size) should be while(ucode_size). Normal case ucode_size>0: !ucode_size=false loop body NEVER executes function unconditionally returns true SRAM-vs-firm

**Citation:** `sys/dev/drm/amd/amdgpu/psp_v10_0.c:433-443`

**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.