Vulnerability · Published Dec 10, 2020 · Assigned by GitHub_M
CVE-2020-26268Write to immutable memory region in TensorFlow
Medium 4.4
In plain English
A medium-severity security flaw in tensorflow from tensorflow. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 12% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
In affected versions of TensorFlow the tf.raw_ops.ImmutableConst operation returns a constant tensor created from a memory mapped file which is assumed immutable. However, if the type of the tensor is not an integral type, the operation crashes the Python interpreter as it tries to write to the memory area. If the file is too small, TensorFlow properly returns an error as the memory area has fewer bytes than what is needed for the tensor it creates. However, as soon as there are enough bytes, the above snippet causes a segmentation fault. This is because the allocator used to return the buffer data is not marked as returning an opaque handle since the needed virtual method is not overridden. This is fixed in versions 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2, and 2.4.0.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| PyPI | tensorflow | 2.1.3 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow | 2.2.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow | 2.3.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow | 1.15.5 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow | 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2 | PYSEC-2020-255 |
| PyPI | tensorflow | 2.0.4 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 2.3.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 1.15.5 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 2.0.4 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 2.1.3 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 2.2.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-cpu | 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2 | PYSEC-2020-299 |
| PyPI | tensorflow-gpu | 2.1.3 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-gpu | 2.2.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-gpu | 2.3.2 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-gpu | 1.15.5 | GHSA-hhvc-g5hv-48c6 |
| PyPI | tensorflow-gpu | 1.15.5, 2.0.4, 2.1.3, 2.2.2, 2.3.2 | PYSEC-2020-334 |
| PyPI | tensorflow-gpu | 2.0.4 | GHSA-hhvc-g5hv-48c6 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| tensorflow | tensorflow | < 1.15.5>= 2.0.0, < 2.0.4>= 2.1.0, < 2.1.3>= 2.2.0, < 2.2.2>= 2.3.0, < 2.3.2 |
Weakness: CWE-471 · Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L