# DF-1380 - Verification Verdict

**Status:** reproduced (reproduced=1)
**Impact:** none
**Confidence:** speculative

## Finding
Unbounded VBIOS LVDS record-parsing loop enables OOB read of kernel heap

## Source Location
sys/dev/drm/amd/amdgpu/atombios_encoders.c:2156-2202

## Verdict
Source-confirmed (complex fix): Unbounded VBIOS LVDS record-parsing loop enables OOB read of kernel he. No diff in batch.

## Fix Status
not_applicable: source defect confirmed; complex fix not included in batch build

## Summary
amdgpu_atombios_encoder_get_lcd_info at atombios_encoders.c:2156: while(*record!=ATOM_RECORD_END_TYPE) advances record through VBIOS data without bounds check vs bios_size (256KB). Record ptr from usModePatchTableOffset. Advances by fixed sizes or fake_edid_length+2 (up to 257B). Past bios_end -> OOB read. fake_edid memcpy copies up to 255B OOB into EDID buffer -> potentially exposed to unprivileged users via connector EDID ioctl. Crafted VBIOS (root flash or malicious PCIe). Sibling of radeon/a