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| author |  Alexander Richards <electrodeyt@gmail.com>
| 2024-01-11 16:04:48 +0100 |
|---|---|---|
| committer |  Alex Deucher <alexander.deucher@amd.com>
| 2024-01-15 18:35:37 -0500 |
| commit | 4630d5031cd87438cc14a4619b8d4148eef1405e (patch) | |
| tree | b38dcfdb2613a215e81b60833525f21e187ba5eb /drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | |
| parent | drm/amd/display: Add Replay IPS register for DMUB command table (diff) | |
| download | linux-4630d5031cd87438cc14a4619b8d4148eef1405e.tar.gz linux-4630d5031cd87438cc14a4619b8d4148eef1405e.tar.bz2 linux-4630d5031cd87438cc14a4619b8d4148eef1405e.zip | |
drm/amdgpu: check PS, WS index
Theoretically, it would be possible for a buggy or malicious VBIOS to
overwrite past the bounds of the passed parameters (or its own
workspace); add bounds checking to prevent this from happening.
Closes: https://gitlab.freedesktop.org/drm/amd/-/issues/3093
Signed-off-by: Alexander Richards <electrodeyt@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/atombios_i2c.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/atombios_i2c.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c index af0335535f82..a6501114322f 100644 --- a/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c +++ b/drivers/gpu/drm/amd/amdgpu/atombios_i2c.c @@ -86,7 +86,7 @@ static int amdgpu_atombios_i2c_process_i2c_ch(struct amdgpu_i2c_chan *chan, args.ucSlaveAddr = slave_addr << 1; args.ucLineNumber = chan->rec.i2c_id; - amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args); + amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args, sizeof(args)); /* error */ if (args.ucStatus != HW_ASSISTED_I2C_STATUS_SUCCESS) { @@ -172,5 +172,5 @@ void amdgpu_atombios_i2c_channel_trans(struct amdgpu_device *adev, u8 slave_addr args.ucSlaveAddr = slave_addr; args.ucLineNumber = line_number; - amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args); + amdgpu_atom_execute_table(adev->mode_info.atom_context, index, (uint32_t *)&args, sizeof(args)); } |