In the Linux kernel, the following vulnerability has been resolved:
drm/amd/display: Fix index out of bounds in DCN30 degamma hardware format translation
This commit addresses a potential index out of bounds issue in the
cm3_helper_translate_curve_to_degamma_hw_format
function in the DCN30
color management module. The issue could occur when the index 'i'
exceeds the number of transfer function points (TRANSFERFUNCPOINTS).
The fix adds a check to ensure 'i' is within bounds before accessing the transfer function points. If 'i' is out of bounds, the function returns false to indicate an error.
Reported by smatch: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30cmcommon.c:338 cm3helpertranslatecurvetodegammahwformat() error: buffer overflow 'outputtf->tfpts.red' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30cmcommon.c:339 cm3helpertranslatecurvetodegammahwformat() error: buffer overflow 'outputtf->tfpts.green' 1025 <= s32max drivers/gpu/drm/amd/amdgpu/../display/dc/dcn30/dcn30cmcommon.c:340 cm3helpertranslatecurvetodegammahwformat() error: buffer overflow 'outputtf->tf_pts.blue' 1025 <= s32max