CVE-2021-41195

描述

TensorFlow is an open source platform for machine learning. In affected versions the implementation of `tf.math.segment_*` operations results in a `CHECK`-fail related abort (and denial of service) if a segment id in `segment_ids` is large. This is similar to CVE-2021-29584 (and similar other reported vulnerabilities in TensorFlow, localized to specific APIs): the implementation (both on CPU and GPU) computes the output shape using `AddDim`. However, if the number of elements in the tensor overflows an `int64_t` value, `AddDim` results in a `CHECK` failure which provokes a `std::abort`. Instead, code should use `AddDimWithStatus`. The fix will be included in TensorFlow 2.7.0. We will also cherrypick this commit on TensorFlow 2.6.1, TensorFlow 2.5.2, and TensorFlow 2.4.4, as these are also affected and still in supported range.

如何修補 CVE-2021-41195

要修補 CVE-2021-41195,請將受影響套件升級到下列已修補版本。

• —升級至 2.6.1 或更新版本
• —升級至 2.6.1 或更新版本
• —升級至 2.6.1 或更新版本

CVE-2021-41195 正在被利用嗎?

低 — EPSS 為 0.2%,目前沒有觀察到大規模利用活動。

受影響套件(3)

• >= 2.6.0, < 2.6.1
• >= 2.6.0, < 2.6.1
• >= 2.6.0, < 2.6.1

CVSS 分數

參考連結(9)

• ADVISORYnvd.nist.gov/vuln/detail/CVE-2021-41195
• PATCHgithub.com/tensorflow/tensorflow
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-cpu/PYSEC-2021-844.yaml
• WEBgithub.com/pypa/advisory-database/tree/main/vulns/tensorflow-gpu/PYSEC-2021-846.yaml