Harry Wentland ff287df16a drm/amd/display: Bound VBIOS record-chain walk loops ... [Why & How] All record-chain walk loops in bios_parser.c and bios_parser2.c use for(;;) and only terminate on a 0xFF record_type sentinel or zero record_size. A malformed VBIOS image missing the terminator record causes unbounded iteration at probe time, potentially hundreds of thousands of iterations with record_size=1. In the final iterations near the BIOS image boundary, struct casts beyond the 2-byte header validated by GET_IMAGE can also read out of bounds. Cap all 14 record-chain walk loops to BIOS_MAX_NUM_RECORD (256) iterations. The atombios.h defines up to 22 distinct record types and atomfirmware.h has 13. Assuming an average of less than 10 records per type (which is reasonable since most are connector- based) 256 is a generous upper bound. Fixes: 4562236b3b ("drm/amd/dc: Add dc display driver (v2)") Assisted-by: Copilot:claude-opus-4.6 Mythos Reviewed-by: Alex Hung <alex.hung@amd.com> Signed-off-by: Harry Wentland <harry.wentland@amd.com> Signed-off-by: Ray Wu <ray.wu@amd.com> Tested-by: Daniel Wheeler <daniel.wheeler@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commit 95700a3d66) Cc: stable@vger.kernel.org		2026-06-03 14:45:44 -04:00
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amdgpu_dm	drm/amd/display: Fix NULL deref and buffer over-read in SDP debugfs	2026-06-03 14:44:13 -04:00
dc	drm/amd/display: Bound VBIOS record-chain walk loops	2026-06-03 14:45:44 -04:00
dmub	drm/amd/display: [FW Promotion] Release 0.1.53.0	2026-03-30 15:12:51 -04:00
include	drm/amd/display: Read EDID from VBIOS embedded panel info	2026-04-29 10:41:40 -04:00
modules	drm/amd/display: Clamp HDMI HDCP2 rx_id_list read to buffer size	2026-06-03 14:45:23 -04:00
Kconfig	drm/amd/display: add CEC notifier to amdgpu driver	2025-01-10 11:58:57 -05:00
Makefile	drm/amd/display: Add Component To Handle Bounding Box Values and IP Caps	2025-08-29 10:14:02 -04:00