{"id":"CVE-2021-29611","aliases":["BIT-tensorflow-2021-29611","GHSA-9rpc-5v9q-5r7f","PYSEC-2021-248","PYSEC-2021-539","PYSEC-2021-737"],"url":"https://o3.security/vulnerability/CVE-2021-29611","summary":"Incomplete validation in `SparseReshape`","details":"### Impact\nIncomplete validation in `SparseReshape` results in a denial of service based on a `CHECK`-failure.\n\n```python\nimport tensorflow as tf\n\ninput_indices = tf.constant(41, shape=[1, 1], dtype=tf.int64)\ninput_shape = tf.zeros([11], dtype=tf.int64)\nnew_shape = tf.zeros([1], dtype=tf.int64)\n\ntf.raw_ops.SparseReshape(input_indices=input_indices,\n    input_shape=input_shape,\n    new_shape=new_shape)\n``` \n    \nThe [implementation](https://github.com/tensorflow/tensorflow/blob/e87b51ce05c3eb172065a6ea5f48415854223285/tensorflow/core/kernels/sparse_reshape_op.cc#L40) has no validation that the input arguments specify a valid sparse tensor.\n\n### Patches \nWe have patched the issue in GitHub commit [1d04d7d93f4ed3854abf75d6b712d72c3f70d6b6](https://github.com/tensorflow/tensorflow/commit/1d04d7d93f4ed3854abf75d6b712d72c3f70d6b6).\n\nThe fix will be included in TensorFlow 2.5.0. We will also cherrypick this commit on TensorFlow 2.4.2 and TensorFlow 2.3.3, as these are the only affected versions.\n\n### For more information\nPlease consult [our security guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for more information regarding the security model and how to contact us with issues and questions.\n\n### Attribution \nThis vulnerability has been reported by Ying Wang and Yakun Zhang of Baidu X-Team.","published":"2021-05-14T20:15:15.947Z","modified":"2026-08-07T16:50:12.634573Z","cvss":{"score":5.5,"severity":"MEDIUM","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"},"epss":null,"cisaKev":null,"exploitsKnown":null,"affectedPackages":[{"ecosystem":"PyPI","name":"tensorflow","fixedVersion":"2.3.3"},{"ecosystem":"PyPI","name":"tensorflow","fixedVersion":"2.4.2"},{"ecosystem":"PyPI","name":"tensorflow-cpu","fixedVersion":"2.3.3"},{"ecosystem":"PyPI","name":"tensorflow-cpu","fixedVersion":"2.4.2"},{"ecosystem":"PyPI","name":"tensorflow-gpu","fixedVersion":"2.3.3"},{"ecosystem":"PyPI","name":"tensorflow-gpu","fixedVersion":"2.4.2"}],"fix":{"url":"https://github.com/tensorflow/tensorflow/commit/1d04d7d93f4ed3854abf75d6b712d72c3f70d6b6","label":"tensorflow/tensorflow@1d04d7d"},"references":[{"type":"FIX","url":"https://github.com/tensorflow/tensorflow/commit/1d04d7d93f4ed3854abf75d6b712d72c3f70d6b6"},{"type":"FIX","url":"https://github.com/tensorflow/tensorflow/security/advisories/GHSA-9rpc-5v9q-5r7f"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2021-29611"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-539.yaml"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-737.yaml"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/tensorflow/PYSEC-2021-248.yaml"},{"type":"PACKAGE","url":"https://github.com/tensorflow/tensorflow"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-07T16:50:12.634573Z"}}