6.1-stable review patch. If anyone has any objections, please let me know.
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From: Candice Li candice.li@amd.com
commit c99769bceab4ecb6a067b9af11f9db281eea3e2a upstream.
Add TA binary size validation to avoid OOB write.
Signed-off-by: Candice Li candice.li@amd.com Reviewed-by: Hawking Zhang Hawking.Zhang@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com (cherry picked from commit c0a04e3570d72aaf090962156ad085e37c62e442) Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- 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 @@ -148,6 +148,9 @@ static ssize_t ta_if_load_debugfs_write( if (ret) return -EINVAL;
+ if (ta_bin_len > PSP_1_MEG) + return -EINVAL; + copy_pos += sizeof(uint32_t);
ta_bin = kzalloc(ta_bin_len, GFP_KERNEL);