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Moderate severityNVD Advisory· Published Aug 12, 2021· Updated Aug 4, 2024

Floating point exception in `SparseDenseCwiseDiv` in TensorFlow

CVE-2021-37636

Description

TensorFlow is an end-to-end open source platform for machine learning. In affected versions the implementation of tf.raw_ops.SparseDenseCwiseDiv is vulnerable to a division by 0 error. The implementation uses a common class for all binary operations but fails to treat the division by 0 case separately. We have patched the issue in GitHub commit d9204be9f49520cdaaeb2541d1dc5187b23f31d9. The fix will be included in TensorFlow 2.6.0. We will also cherrypick this commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are also affected and still in supported range.

Affected packages

Versions sourced from the GitHub Security Advisory.

PackageAffected versionsPatched versions
tensorflowPyPI
< 2.3.42.3.4
tensorflowPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflowPyPI
>= 2.5.0, < 2.5.12.5.1
tensorflow-cpuPyPI
< 2.3.42.3.4
tensorflow-cpuPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflow-cpuPyPI
>= 2.5.0, < 2.5.12.5.1
tensorflow-gpuPyPI
< 2.3.42.3.4
tensorflow-gpuPyPI
>= 2.4.0, < 2.4.32.4.3
tensorflow-gpuPyPI
>= 2.5.0, < 2.5.12.5.1

Affected products

1

Patches

1
d9204be9f495

Disallow division by zero FPE in tf.raw_ops.SparseDenseCwiseDiv

https://github.com/tensorflow/tensorflowLaura PakJul 10, 2021via ghsa
commit
1 file changed · +10 −1
  • tensorflow/core/kernels/sparse_dense_binary_op_shared.cc+10 −1 modified
    @@ -114,7 +114,10 @@ class SparseDenseBinaryOpShared : public OpKernel {
     OP_REQUIRES_OK(
         ctx, ctx->allocate_temp(DataTypeToEnum<T>::value, TensorShape({nnz}),
                                 &dense_gathered));
-
+    bool op_is_div = false;
+    if (absl::StrContains(ctx->op_kernel().type_string_view(), "Div")) {
+      op_is_div = true;
+    }
     // Pulls relevant entries from the dense side, with reshape and broadcasting
     // *of the dense side* taken into account.  Use a TensorRef to avoid blowing
     // up memory.
@@ -143,6 +146,12 @@ class SparseDenseBinaryOpShared : public OpKernel {
           errors::InvalidArgument("Provided indices are out-of-bounds w.r.t. " \
                                   "dense side with broadcasted shape"));       \
       dense_gathered_flat(i) = rhs_ref.coeff(idx);                             \
+      if (op_is_div) {                                                         \
+        OP_REQUIRES(ctx, dense_gathered_flat(i) != 0,                          \
+                    errors::InvalidArgument(                                   \
+                        "SparseDenseCwiseDiv cannot divide by zero,"           \
+                        "but input dense tensor contains zero "));             \
+      }                                                                        \
     }                                                                          \
     break;                                                                     \
   }

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

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