Headline
CVE-2023-25663: Fixing null pointer read in TensorArrayConcat when the step container… · tensorflow/tensorflow@239139d
TensorFlow is an open source platform for machine learning. Prior to versions 2.12.0 and 2.11.1, when ctx->step_containter() is a null ptr, the Lookup function will be executed with a null pointer. A fix is included in TensorFlow 2.12.0 and 2.11.1.
@@ -80,8 +80,9 @@ Status GetTensorArray(OpKernelContext* ctx, TensorArray** tensor_array) {
TF_RETURN_IF_ERROR(GetHandle(ctx, &container, &ta_handle));
ResourceMgr* rm = ctx->resource_manager();
if (rm == nullptr) return errors::Internal(“No resource manager.”);
TF_RETURN_IF_ERROR(
ctx->step_container()->Lookup(rm, container + ta_handle, tensor_array));
ScopedStepContainer* sc = ctx->step_container();
if (sc == nullptr) return errors::Internal(“No step container.”);
TF_RETURN_IF_ERROR(sc->Lookup(rm, container + ta_handle, tensor_array));
return OkStatus();
} else {
return LookupResource(ctx, HandleFromInput(ctx, 0), tensor_array);
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### Impact When ctx->step_containter() is a null ptr, the Lookup function will be executed with a null pointer. ```python import tensorflow as tf tf.raw_ops.TensorArrayConcatV2(handle=['a', 'b'], flow_in = 0.1, dtype=tf.int32, element_shape_except0=1) ``` ### Patches We have patched the issue in GitHub commit [239139d2ae6a81ae9ba499ad78b56d9b2931538a](https://github.com/tensorflow/tensorflow/commit/239139d2ae6a81ae9ba499ad78b56d9b2931538a). The fix will be included in TensorFlow 2.12.0. We will also cherrypick this commit on TensorFlow 2.11.1 ### For more information Please consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions. ### Attribution This vulnerability has been reported by Yu Tian