CVE-2021-29542

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Source
https://cve.org/CVERecord?id=CVE-2021-29542
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29542.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-29542
Aliases
Related
Published
2021-05-14T20:15:12.537Z
Modified
2026-04-11T17:12:41.809542Z
Severity
  • 5.5 (Medium) CVSS_V3 - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

TensorFlow is an end-to-end open source platform for machine learning. An attacker can cause a heap buffer overflow by passing crafted inputs to tf.raw_ops.StringNGrams. This is because the implementation(https://github.com/tensorflow/tensorflow/blob/1cdd4da14282210cc759e468d9781741ac7d01bf/tensorflow/core/kernels/stringngramsop.cc#L171-L185) fails to consider corner cases where input would be split in such a way that the generated tokens should only contain padding elements. If input is such that num_tokens is 0, then, for data_start_index=0 (when left padding is present), the marked line would result in reading data[-1]. 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.

References

Affected packages

Git / github.com/tensorflow/tensorflow

Affected ranges

Type
GIT
Repo
https://github.com/tensorflow/tensorflow
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
0931ea3d985bb9c8fdd054a5e29c4129623c849b
Introduced
2b96f3662bd776e277f86997659e61046b56c315
Fixed
cfe0c80169ae984bcdc99ff6de7444164aaa8e07
Introduced
b36436b087bd8e8701ef51718179037cccdfc26e
Fixed
3929ffacfbef7c431e8397920d040aaf47acff19
Introduced
582c8d236cb079023657287c318ff26adb239002
Fixed
1923123d32ea41d92b70a27a3f6ecf0763b56f6c
Fixed
ba424dd8f16f7110eea526a8086f1a155f14f22b
Database specific 
{
    "versions": [
        {
            "introduced": "0"
        },
        {
            "fixed": "2.1.4"
        },
        {
            "introduced": "2.2.0"
        },
        {
            "fixed": "2.2.3"
        },
        {
            "introduced": "2.3.0"
        },
        {
            "fixed": "2.3.3"
        },
        {
            "introduced": "2.4.0"
        },
        {
            "fixed": "2.4.2"
        }
    ]
}

Affected versions

0.*
0.5.0
0.6.0
v1.*
v1.1.0-rc1
v1.1.0-rc2
v1.12.1
v1.6.0-rc1
v1.9.0-rc2
v2.*
v2.1.0
v2.1.0-rc0
v2.1.0-rc1
v2.1.0-rc2
v2.1.1
v2.1.2
v2.1.3
v2.2.0
v2.2.1
v2.2.2
v2.3.0
v2.3.1
v2.3.2
v2.4.0
v2.4.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-29542.json"
vanir_signatures_modified 
"2026-04-11T17:12:41Z"
vanir_signatures 
[
    {
        "signature_version": "v1",
        "signature_type": "Line",
        "source": "https://github.com/tensorflow/tensorflow/commit/ba424dd8f16f7110eea526a8086f1a155f14f22b",
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "57195627247613741680534829079164726143",
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                "148483364633044098094999335534833305871",
                "331974045402895367520587276108357081382"
            ]
        },
        "id": "CVE-2021-29542-e874b66d",
        "deprecated": false,
        "target": {
            "file": "tensorflow/core/kernels/string_ngrams_op.cc"
        }
    }
]