CVE-2021-41220CWE-416

Use after free in `CollectiveReduceV2`

High · published November 5, 2021

CVSS v3.1
7.8
EPSS
0%
Percentile
10.8
In the wild
Unconfirmed
What it is

TensorFlow is an open source platform for machine learning. In affected versions the async implementation of `CollectiveReduceV2` suffers from a memory leak and a use after free. This occurs due to the asynchronous computation and the fact that objects that have been `std::move()`d from are still accessed. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, as this version is the only one that is also affected.

The record
Technical detail
CVSS v3.1
7.8 · HIGH
Vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.00211 · 10.8th percentile
Weakness
CWE-416 · Use After Free
Published
2021-11-05T22:20Z
EPSS history
Timeline
  • 05 NOV 22:20Z
    Use after free in `CollectiveReduceV2`
    cvelistv5