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Low severityNVD Advisory· Published May 14, 2021· Updated Aug 3, 2024

Heap buffer overflow in `SparseTensorToCSRSparseMatrix`

CVE-2021-29545

Description

TensorFlow is an end-to-end open source platform for machine learning. An attacker can trigger a denial of service via a CHECK-fail in converting sparse tensors to CSR Sparse matrices. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/800346f2c03a27e182dd4fba48295f65e7790739/tensorflow/core/kernels/sparse/kernels.cc#L66) does a double redirection to access an element of an array allocated on the heap. If the value at indices(i, 0) is such that indices(i, 0) + 1 is outside the bounds of csr_row_ptr, this results in writing outside of bounds of heap allocated data. 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
1e922ccdf6bf

Fix crash in `SparseTensorToCSRSparseMatrixCPUFunctor`

https://github.com/tensorflow/tensorflowMihai MaruseacApr 23, 2021via ghsa
commit
1 file changed · +6 −0
  • tensorflow/core/kernels/sparse/kernels.cc+6 −0 modified
    @@ -22,6 +22,7 @@ limitations under the License.
 #include "tensorflow/core/framework/tensor_types.h"
 #include "tensorflow/core/lib/core/errors.h"
 #include "tensorflow/core/lib/core/status.h"
+#include "tensorflow/core/platform/errors.h"
 
 namespace tensorflow {
 namespace functor {
@@ -63,6 +64,11 @@ Status SparseTensorToCSRSparseMatrixCPUFunctor::operator()(
 
     for (int64 i = 0; i < total_nnz; ++i) {
       // For now, the rows pointers store the corresponding row counts.
+      int64 ix = indices(i, 0) + 1;
+      if (ix >= csr_row_ptr.size()) {
+        return errors::InvalidArgument("Got an index ", ix,
+                                       " that is outside of csr_row_ptr");
+      }
       csr_row_ptr(indices(i, 0) + 1) += 1;
       csr_col_ind(i) = indices(i, 1);
     }

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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