{"cve":"CVE-2020-15202","nvd":{"published":"2020-09-25T19:15:15.493","modified":"2026-06-17T02:56:15.357","status":"Modified","description":"In Tensorflow before versions 1.15.4, 2.0.3, 2.1.2, 2.2.1 and 2.3.1, the `Shard` API in TensorFlow expects the last argument to be a function taking two `int64` (i.e., `long long`) arguments. However, there are several places in TensorFlow where a lambda taking `int` or `int32` arguments is being used. In these cases, if the amount of work to be parallelized is large enough, integer truncation occurs. Depending on how the two arguments of the lambda are used, this can result in segfaults, read/write outside of heap allocated arrays, stack overflows, or data corruption. The issue is patched in commits 27b417360cbd671ef55915e4bb6bb06af8b8a832 and ca8c013b5e97b1373b3bb1c97ea655e69f31a575, and is released in TensorFlow versions 1.15.4, 2.0.3, 2.1.2, 2.2.1, or 2.3.1.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H","score":9.0},"cwes":["CWE-197","CWE-754"],"references":["http://lists.opensuse.org/opensuse-security-announce/2020-10/msg00065.html","https://github.com/tensorflow/tensorflow/commit/27b417360cbd671ef55915e4bb6bb06af8b8a832","https://github.com/tensorflow/tensorflow/commit/ca8c013b5e97b1373b3bb1c97ea655e69f31a575","https://github.com/tensorflow/tensorflow/releases/tag/v2.3.1","https://github.com/tensorflow/tensorflow/security/advisories/GHSA-h6fg-mjxg-hqq4"],"products":["google:tensorflow","opensuse:leap"],"source":"nvd","synced_at":"2026-10-19T21:09:53.489947993+00:00"},"epss":{"cve":"CVE-2020-15202","score":0.01287,"percentile":0.70175,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-h6fg-mjxg-hqq4","url":"https://osv.dev/vulnerability/GHSA-h6fg-mjxg-hqq4","summary":"Integer truncation in Shard API usage","modified":"2026-07-08T06:28:40.924381751Z","packages":[{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":["<1.15.4"],"fixed":["1.15.4"]},{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":[">=2.0.0 <2.0.3"],"fixed":["2.0.3"]},{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":[">=2.1.0 <2.1.2"],"fixed":["2.1.2"]},{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":[">=2.2.0 <2.2.1"],"fixed":["2.2.1"]},{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":[">=2.3.0 <2.3.1"],"fixed":["2.3.1"]},{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":["<1.15.4"],"fixed":["1.15.4"]},{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":[">=2.0.0 <2.0.3"],"fixed":["2.0.3"]},{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":[">=2.1.0 <2.1.2"],"fixed":["2.1.2"]},{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":[">=2.2.0 <2.2.1"],"fixed":["2.2.1"]},{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":[">=2.3.0 <2.3.1"],"fixed":["2.3.1"]},{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":["<1.15.4"],"fixed":["1.15.4"]},{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":[">=2.0.0 <2.0.3"],"fixed":["2.0.3"]},{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":[">=2.1.0 <2.1.2"],"fixed":["2.1.2"]},{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":[">=2.2.0 <2.2.1"],"fixed":["2.2.1"]},{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":[">=2.3.0 <2.3.1"],"fixed":["2.3.1"]}]},{"id":"PYSEC-2020-125","url":"https://osv.dev/vulnerability/PYSEC-2020-125","summary":"","modified":"2023-12-06T01:00:16.760476Z","packages":[{"ecosystem":"PyPI","name":"tensorflow","purl":"pkg:pypi/tensorflow","ranges":["<1.15.4",">=2.0.0 <2.0.3",">=2.1.0 <2.1.2",">=2.2.0 <2.2.1",">=2.3.0 <2.3.1"],"fixed":["1.15.4","2.0.3","2.1.2","2.2.1","2.3.1"]}]},{"id":"PYSEC-2020-282","url":"https://osv.dev/vulnerability/PYSEC-2020-282","summary":"","modified":"2023-12-06T01:00:16.760476Z","packages":[{"ecosystem":"PyPI","name":"tensorflow-cpu","purl":"pkg:pypi/tensorflow-cpu","ranges":["<1.15.4",">=2.0.0 <2.0.3",">=2.1.0 <2.1.2",">=2.2.0 <2.2.1",">=2.3.0 <2.3.1"],"fixed":["1.15.4","2.0.3","2.1.2","2.2.1","2.3.1"]}]},{"id":"PYSEC-2020-317","url":"https://osv.dev/vulnerability/PYSEC-2020-317","summary":"","modified":"2023-12-06T01:00:16.760476Z","packages":[{"ecosystem":"PyPI","name":"tensorflow-gpu","purl":"pkg:pypi/tensorflow-gpu","ranges":["<1.15.4",">=2.0.0 <2.0.3",">=2.1.0 <2.1.2",">=2.2.0 <2.2.1",">=2.3.0 <2.3.1"],"fixed":["1.15.4","2.0.3","2.1.2","2.2.1","2.3.1"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}