[PATCH 6.6 297/341] drm/amdgpu: Validate TA binary size

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Candice Li <candice.li@xxxxxxx>

commit c99769bceab4ecb6a067b9af11f9db281eea3e2a upstream.

Add TA binary size validation to avoid OOB write.

Signed-off-by: Candice Li <candice.li@xxxxxxx>
Reviewed-by: Hawking Zhang <Hawking.Zhang@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
(cherry picked from commit c0a04e3570d72aaf090962156ad085e37c62e442)
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c |    3 +++
 1 file changed, 3 insertions(+)

--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_psp_ta.c
@@ -166,6 +166,9 @@ static ssize_t ta_if_load_debugfs_write(
 	if (ret)
 		return -EFAULT;
 
+	if (ta_bin_len > PSP_1_MEG)
+		return -EINVAL;
+
 	copy_pos += sizeof(uint32_t);
 
 	ta_bin = kzalloc(ta_bin_len, GFP_KERNEL);






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