CVE-2021-41221

high

Published 2021-11-10 · Modified 2023-12-06

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CVSS v3

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CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS v4 NEW

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not yet in upstream

VIR risk

8.0

Description

TensorFlow is an open source platform for machine learning. In affected versions the shape inference code for the `Cudnn*` operations in TensorFlow can be tricked into accessing invalid memory, via a heap buffer overflow. This occurs because the ranks of the `input`, `input_h` and `input_c` parameters are not validated, but code assumes they have certain values. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

Predictions

Exploit likelihood

20%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

No mitigations published for this CVE yet.

The vendor-content worker queues fetches as references arrive (check back in a few minutes). Or — if you've already worked around this in production — publish your fix to the community-verified tier.

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OS impact

Arch Fixed 1 release

Version	Status	Fixed in
—	Fixed	`2.6.1-1`

Debian Fixed 2 releases

Version	Status	Fixed in
sid	Fixed	`0`
forky	Fixed	`0`

Package impact

Ecosystem	Package	Vulnerable	Fixed
PyPI	tensorflow	`>=2.6.0,<2.6.1`	`2.6.1`
PyPI	tensorflow	`>=2.5.0,<2.5.2`	`2.5.2`
PyPI	tensorflow	`<2.4.4`	`2.4.4`
PyPI	tensorflow-cpu	`>=2.6.0,<2.6.1`	`2.6.1`
PyPI	tensorflow-cpu	`>=2.5.0,<2.5.2`	`2.5.2`
PyPI	tensorflow-cpu	`<2.4.4`	`2.4.4`
PyPI	tensorflow-gpu	`>=2.6.0,<2.6.1`	`2.6.1`
PyPI	tensorflow-gpu	`>=2.5.0,<2.5.2`	`2.5.2`
PyPI	tensorflow-gpu	`<2.4.4`	`2.4.4`
PyPI	tensorflow-cpu	`<af5fcebb37c8b5d71c237f4e59c6477015c78ce6\|\|>=2.7.0rc0,<2.7.0`	`af5fcebb37c8b5d71c237f4e59c6477015c78ce6`
PyPI	tensorflow	`<af5fcebb37c8b5d71c237f4e59c6477015c78ce6\|\|>=2.7.0rc0,<2.7.0`	`af5fcebb37c8b5d71c237f4e59c6477015c78ce6`
PyPI	tensorflow-gpu	`<af5fcebb37c8b5d71c237f4e59c6477015c78ce6\|\|>=2.7.0rc0,<2.7.0`	`af5fcebb37c8b5d71c237f4e59c6477015c78ce6`

References

Community-verified mitigations for this CVE will appear above when contributors publish them.

Verify integrity in audit chain (admin only). AS-IS.