CVE-2021-29604: Division by zero in TFLite's implementation of hashtable lookup
2.5
CVSS Score
3.1
Basic Information
CVE ID
GHSA ID
EPSS Score
0.01803%
CWE
Published
5/21/2021
Updated
11/13/2024
KEV Status
No
Technology
Python
PythonTechnical Details
CVSS Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:L
| Package Name | Ecosystem | Vulnerable Versions | First Patched Version |
|---|---|---|---|
| tensorflow | pip | < 2.1.4 | 2.1.4 |
| tensorflow | pip | >= 2.2.0, < 2.2.3 | 2.2.3 |
| tensorflow | pip | >= 2.3.0, < 2.3.3 | 2.3.3 |
| tensorflow | pip | >= 2.4.0, < 2.4.2 | 2.4.2 |
| tensorflow-cpu | pip | < 2.1.4 | 2.1.4 |
| tensorflow-cpu | pip | >= 2.2.0, < 2.2.3 | 2.2.3 |
| tensorflow-cpu | pip | >= 2.3.0, < 2.3.3 | 2.3.3 |
| tensorflow-cpu | pip | >= 2.4.0, < 2.4.2 | 2.4.2 |
| tensorflow-gpu | pip | < 2.1.4 | 2.1.4 |
| tensorflow-gpu | pip | >= 2.2.0, < 2.2.3 | 2.2.3 |
| tensorflow-gpu | pip | >= 2.3.0, < 2.3.3 | 2.3.3 |
| tensorflow-gpu | pip | >= 2.4.0, < 2.4.2 | 2.4.2 |
Vulnerability Intelligence
Miggo AI
Miggo AIRoot Cause Analysis
The vulnerability stems directly from lines 114-115 in hashtable_lookup.cc where row_bytes is calculated as value->bytes divided by num_rows. The Eval function is the only location shown in the provided code/diffs where this unsafe division occurs. The patch adds a TF_LITE_ENSURE check specifically in this function to validate num_rows != 0, confirming this as the vulnerable location. No other functions in the call chain (e.g., SizeOfDimension, GetInputSafe) are implicated in the division operation itself.