drm/amd/display: Check msg_id before processing transcation

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[ Upstream commit fa71face75 ]

[WHY & HOW]
HDCP_MESSAGE_ID_INVALID (-1) is not a valid msg_id nor is it a valid
array index, and it needs checking before used.

This fixes 4 OVERRUN issues reported by Coverity.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Alex Hung <alex.hung@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

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Alex Hung 2024-04-16 16:47:42 -06:00 • committed by Greg Kroah-Hartman

parent c4a7f7c006

commit fe63daf7b1

1 changed files with 15 additions and 2 deletions

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drivers/gpu/drm/amd/display/dc/hdcp/hdcp_msg.c

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