VYPR
Get started
← All advisories
Low severityNVD Advisory· Published May 14, 2021· Updated Aug 3, 2024

CHECK-failure in `UnsortedSegmentJoin`

CVE-2021-29552

Description

TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a denial of service by controlling the values of num_segments tensor argument for UnsortedSegmentJoin. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/a2a607db15c7cd01d754d37e5448d72a13491bdb/tensorflow/core/kernels/unsorted_segment_join_op.cc#L92-L93) assumes that the num_segments tensor is a valid scalar. Since the tensor is empty the CHECK involved in .scalar<T>()() that checks that the number of elements is exactly 1 will be invalidated and this would result in process termination. The fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
tensorflowPyPI
< 2.1.42.1.4
tensorflowPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflowPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflowPyPI
>= 2.4.0, < 2.4.22.4.2
tensorflow-cpuPyPI
< 2.1.42.1.4
tensorflow-cpuPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflow-cpuPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflow-cpuPyPI
>= 2.4.0, < 2.4.22.4.2
tensorflow-gpuPyPI
< 2.1.42.1.4
tensorflow-gpuPyPI
>= 2.2.0, < 2.2.32.2.3
tensorflow-gpuPyPI
>= 2.3.0, < 2.3.32.3.3
tensorflow-gpuPyPI
>= 2.4.0, < 2.4.22.4.2

Affected products

1

Patches

1
704866eabe03

Fix overflow CHECK issue with `tf.raw_ops.UnsortedSegmentJoin`.

https://github.com/tensorflow/tensorflowAmit PatankarApr 27, 2021via ghsa
commit
1 file changed · +2 −0
  • tensorflow/core/kernels/unsorted_segment_join_op.cc+2 −0 modified
    @@ -90,6 +90,8 @@ class UnsortedSegmentJoinOp : public OpKernel {
     const int32 segment_dims = segment_id_shape.dims();
 
     const Tensor& num_segments_tensor = context->input(2);
+    OP_REQUIRES(context, num_segments_tensor.NumElements() != 0,
+                errors::InvalidArgument("Number of segments cannot be empty."));
     auto num_segments = num_segments_tensor.scalar<NUM_SEGMENTS_TYPE>()();
 
     OP_REQUIRES(context, segment_dims != 0,

Vulnerability mechanics

Generated by null/stub on May 9, 2026. Inputs: CWE entries + fix-commit diffs from this CVE's patches. Citations validated against bundle.

References

7

News mentions

0

No linked articles in our index yet.