QID 983227

QID 983227: Python (pip) Security Update for tensorflow-gpu (GHSA-q263-fvxm-m5mw)

Security update has been released for tensorflow,tensorflow-cpu,tensorflow-gpu to fix the vulnerability.

Note: The preceding description block is extracted directly from the security advisory. Using automation, we have attempted to clean and format it as much as possible without introducing additional issues.

Under certain cases, loading a saved model can result in accessing uninitialized memory while building the computation graph. The [`MakeEdge` function](https://github.com/tensorflow/tensorflow/blob/3616708cb866365301d8e67b43b32b46d94b08a0/tensorflow/core/common_runtime/graph_constructor.cc#L1426-L1438) creates an edge between one output tensor of the `src` node (given by `output_index`) and the input slot of the `dst` node (given by `input_index`). This is only possible if the types of the tensors on both sides coincide, so the function begins by obtaining the corresponding `DataType` values and comparing these for equality:

```cc
DataType src_out = src->output_type(output_index);
DataType dst_in = dst->input_type(input_index);
//...
```

However, there is no check that the indices point to inside of the arrays they index into. Thus, this can result in accessing data out of bounds of the corresponding heap allocated arrays.

In most scenarios, this can manifest as unitialized data access, but if the index points far away from the boundaries of the arrays this can be used to leak addresses from the library.

  • CVSS V3 rated as Medium - 3.3 severity.
  • CVSS V2 rated as Low - 2.1 severity.
  • Solution
    We have patched the issue in GitHub commit [0cc38aaa4064fd9e79101994ce9872c6d91f816b](https://github.com/tensorflow/tensorflow/commit/0cc38aaa4064fd9e79101994ce9872c6d91f816b) and will release TensorFlow 2.4.0 containing the patch. TensorFlow nightly packages after this commit will also have the issue resolved.

    Since this issue also impacts TF versions before 2.4, we will patch all releases between 1.15 and 2.3 inclusive.
    Vendor References

    CVEs related to QID 983227

    Software Advisories
    Advisory ID Software Component Link
    GHSA-q263-fvxm-m5mw tensorflow URL Logo github.com/advisories/GHSA-q263-fvxm-m5mw
    GHSA-q263-fvxm-m5mw tensorflow-cpu URL Logo github.com/advisories/GHSA-q263-fvxm-m5mw
    GHSA-q263-fvxm-m5mw tensorflow-gpu URL Logo github.com/advisories/GHSA-q263-fvxm-m5mw

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