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);
