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CVE-2021-29608

Heap OOB and null pointer dereference in `RaggedTensorToTensor`

HIGH
7.8
CVSS Score
Published: May 14, 2021 at 07:20 PM UTC
Updated: June 17, 2026 at 03:48 AM UTC
2 products affected across 2 vendorsTensorflowTensorFlow

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Severity
HIGH7.8
Exploit prediction
EPSS 0.2%

Description

TensorFlow is an end-to-end open source platform for machine learning. Due to lack of validation in `tf.raw_ops.RaggedTensorToTensor`, an attacker can exploit an undefined behavior if input arguments are empty. The implementation(https://github.com/tensorflow/tensorflow/blob/656e7673b14acd7835dc778867f84916c6d1cac2/tensorflow/core/kernels/ragged_tensor_to_tensor_op.cc#L356-L360) only checks that one of the tensors is not empty, but does not check for the other ones. There are multiple `DCHECK` validations to prevent heap OOB, but these are no-op in release builds, hence they don't prevent anything. The fix will be included in TensorFlow 2.5.0. We will also cherrypick these commits on TensorFlow 2.4.2, TensorFlow 2.3.3, TensorFlow 2.2.3 and TensorFlow 2.1.4, as these are also affected and still in supported range.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tensorflow· Google
95%
v < 2.1.42.2.0 ≤ v < 2.2.32.3.0 ≤ v < 2.3.32.4.0 ≤ v < 2.4.2
Affected range stops below 2.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.3.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.4.2, so it looks safe — our inference, not a vendor statement
TensorFlow· Tensorflow
60%
v < 2.1.4v < 2.2.3v < 2.3.3v < 2.4.2
Affected range stops below 2.1.4, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.2.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.3.3, so it looks safe — our inference, not a vendor statement
Affected range stops below 2.4.2, so it looks safe — our inference, not a vendor statement

References (4)

x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/tensorflow/tensorflow/commit/b761c9b652af2107cfbc33efd19be0ce41daa33e
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/tensorflow/tensorflow/commit/c4d7afb6a5986b04505aca4466ae1951686c80f6
x_refsource_MISCPatchThird Party Advisory
Source: [email protected]
https://github.com/tensorflow/tensorflow/commit/f94ef358bb3e91d517446454edff6535bcfe8e4a
x_refsource_CONFIRMExploitPatchThird Party Advisory
Source: [email protected]
https://github.com/tensorflow/tensorflow/security/advisories/GHSA-rgvq-pcvf-hx75

CVSS

7.8HIGH[email protected]
Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-131

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