chore: import upstream snapshot with attribution

2026-07-13 12:14:16 +08:00
commit 8a852e4b4e
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+## TFSA-2021-129: Heap OOB in `ResourceScatterUpdate`
+
+### CVE Number
+CVE-2021-37655
+
+### Impact
+An attacker can trigger a read from outside of bounds of heap allocated data by
+sending invalid arguments to `tf.raw_ops.ResourceScatterUpdate`:
+
+```python
+import tensorflow as tf
+
+v = tf.Variable([b'vvv'])
+tf.raw_ops.ResourceScatterUpdate(
+  resource=v.handle,
+  indices=[0],
+  updates=['1', '2', '3', '4', '5'])
+```
+
+The
+[implementation](https://github.com/tensorflow/tensorflow/blob/f24faa153ad31a4b51578f8181d3aaab77a1ddeb/tensorflow/core/kernels/resource_variable_ops.cc#L919-L923)
+has an incomplete validation of the relationship between the shapes of `indices`
+and `updates`: instead of checking that the shape of `indices` is a prefix of
+the shape of `updates` (so that broadcasting can happen), code only checks that
+the number of elements in these two tensors are in a divisibility relationship.
+
+### Patches
+We have patched the issue in GitHub commit
+[01cff3f986259d661103412a20745928c727326f](https://github.com/tensorflow/tensorflow/commit/01cff3f986259d661103412a20745928c727326f).
+
+The fix will be included in TensorFlow 2.6.0. We will also cherrypick this
+commit on TensorFlow 2.5.1, TensorFlow 2.4.3, and TensorFlow 2.3.4, as these are
+also affected and still in supported range.
+
+### For more information
+Please consult [our security
+guide](https://github.com/tensorflow/tensorflow/blob/master/SECURITY.md) for
+more information regarding the security model and how to contact us with issues
+and questions.
+
+### Attribution
+This vulnerability has been reported by members of the Aivul Team from Qihoo
+360.