PT-2026-59771
تاريخ النشر
2026-07-09
·
تاريخ التحديث
2026-07-09
الوصف من
CVSS 3.1
6.5
متوسطةالمقاييسAV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Impact
Under certain scenarios, Grappler component of TensorFlow can trigger a null pointer dereference. There are 2 places where this can occur, for the same malicious alteration of a
SavedModel file (fixing the first one would trigger the same dereference in the second place):First, during [constant folding](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/optimizers/constant folding.cc#L3466-L3497), the
GraphDef might not have the required nodes for the binary operation:cc
NodeDef* mul left child = node map ->GetNode(node->input(0));
NodeDef* mul right child = node map ->GetNode(node->input(1));
// One child must be constant, and the second must be Conv op.
const bool left child is constant = IsReallyConstant(*mul left child);
const bool right child is constant = IsReallyConstant(*mul right child);If a node is missing, the correposning
mul *child would be null, and the dereference in the subsequent line would be incorrect.We have a similar issue during [
IsIdentityConsumingSwitch](https://github.com/tensorflow/tensorflow/blob/a1320ec1eac186da1d03f033109191f715b2b130/tensorflow/core/grappler/mutable graph view.cc#L59-L74):cc
NodeDef* input node = graph.GetNode(tensor id.node());
return IsSwitch(*input node);Patches
We have patched the issue in GitHub commits 0a365c029e437be0349c31f8d4c9926b69fa3fa1 and 045deec1cbdebb27d817008ad5df94d96a08b1bf.
The fix will be included in TensorFlow 2.8.0. We will also cherrypick this commit on TensorFlow 2.7.1, TensorFlow 2.6.3, and TensorFlow 2.5.3, 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.
قابلية الاستغلال
إصلاح
المورّدون
المنتجات المتأثرة
المعرّفات ذات الصلة
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