id: PYSEC-2021-661
details: TensorFlow is an end-to-end open source platform for machine learning. An
  attacker can cause a heap buffer overflow in `QuantizedMul` by passing in invalid
  thresholds for the quantization. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/87cf4d3ea9949051e50ca3f071fc909538a51cd0/tensorflow/core/kernels/quantized_mul_op.cc#L287-L290)
  assumes that the 4 arguments are always valid scalars and tries to access the numeric
  value directly. However, if any of these tensors is empty, then `.flat<T>()` is
  an empty buffer and accessing the element at position 0 results in overflow. 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:
- package:
    name: tensorflow-gpu
    ecosystem: PyPI
    purl: pkg:pypi/tensorflow-gpu
  ranges:
  - type: GIT
    repo: https://github.com/tensorflow/tensorflow
    events:
    - introduced: "0"
    - fixed: efea03b38fb8d3b81762237dc85e579cc5fc6e87
  - type: ECOSYSTEM
    events:
    - introduced: "0"
    - fixed: 2.2.0rc0
    - introduced: 2.2.0
    - fixed: 2.3.0rc0
    - introduced: 2.3.0
    - fixed: 2.3.4
    - introduced: 2.4.0
    - fixed: 2.4.3
  versions:
  - 0.12.0
  - 0.12.1
  - 1.0.0
  - 1.0.1
  - 1.1.0
  - 1.10.0
  - 1.10.1
  - 1.11.0
  - 1.12.0
  - 1.12.2
  - 1.12.3
  - 1.13.1
  - 1.13.2
  - 1.14.0
  - 1.15.0
  - 1.15.2
  - 1.15.3
  - 1.15.4
  - 1.15.5
  - 1.2.0
  - 1.2.1
  - 1.3.0
  - 1.4.0
  - 1.4.1
  - 1.5.0
  - 1.5.1
  - 1.6.0
  - 1.7.0
  - 1.7.1
  - 1.8.0
  - 1.9.0
  - 2.0.0
  - 2.0.1
  - 2.0.2
  - 2.0.3
  - 2.0.4
  - 2.1.0
  - 2.1.1
  - 2.1.2
  - 2.1.3
  - 2.1.4
  - 2.2.0
  - 2.2.1
  - 2.2.2
  - 2.2.3
  - 2.3.0
  - 2.3.1
  - 2.3.2
  - 2.3.3
  - 2.4.0
  - 2.4.1
  - 2.4.2
references:
- type: ADVISORY
  url: https://github.com/tensorflow/tensorflow/security/advisories/GHSA-m3f9-w3p3-p669
- type: FIX
  url: https://github.com/tensorflow/tensorflow/commit/efea03b38fb8d3b81762237dc85e579cc5fc6e87
aliases:
- CVE-2021-29535
- GHSA-m3f9-w3p3-p669
modified: "2021-12-09T06:35:20.792Z"
published: "2021-05-14T20:15:00Z"