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amdgpu/pm: prevent array underflow in vega20_odn_edit_dpm_table()
authorDan Carpenter <error27@gmail.com>
Tue, 15 Nov 2022 12:56:57 +0000 (15:56 +0300)
committerAlex Deucher <alexander.deucher@amd.com>
Tue, 15 Nov 2022 18:35:16 +0000 (13:35 -0500)
commitd27252b5706e51188aed7647126e44dcf9e940c1
treebd67540206844efaf4821ba6e46474c632cb8053tree
parentbd3fe587f8989cd06209927abd71ee0af13cca4acommit | diff
amdgpu/pm: prevent array underflow in vega20_odn_edit_dpm_table()

In the PP_OD_EDIT_VDDC_CURVE case the "input_index" variable is capped at
2 but not checked for negative values so it results in an out of bounds
read.  This value comes from the user via sysfs.

Fixes: d5bf26539494 ("drm/amd/powerplay: added vega20 overdrive support V3")
Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
drivers/gpu/drm/amd/pm/powerplay/hwmgr/vega20_hwmgr.c diff | blob | history
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