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CVE-2021-47401

7.1 · HIGH

In the Linux kernel, the following vulnerability has been resolved: ipack: ipoctal: fix stack information leak The tty driver name is used also after registering the driver and must specifically…

Published May 21, 2024CWE-668EPSS 0.25%

Overview

CVE-2021-47401 is a high-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

Technical description

In the Linux kernel, the following vulnerability has been resolved:

ipack: ipoctal: fix stack information leak

The tty driver name is used also after registering the driver and must

specifically not be allocated on the stack to avoid leaking information

to user space (or triggering an oops).

Drivers should not try to encode topology information in the tty device

name but this one snuck in through staging without anyone noticing and

another driver has since copied this malpractice.

Fixing the ABI is a separate issue, but this at least plugs the security

hole.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refgit.kernel.org/stable/c/0a9c36a2e06a249acbed64e8e0b84637c2ad7575Refgit.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7Refgit.kernel.org/stable/c/5f6a309a699675680df15d9b6d389114515b4426Refgit.kernel.org/stable/c/741ea2670e021350e54f491106bdaa22dc50e6a0Refgit.kernel.org/stable/c/829f13d6079cf7a2465522f39acb43033e9b320dRefgit.kernel.org/stable/c/8657158a3b68c85234e6da3d8eae33d6183588b7Refgit.kernel.org/stable/c/a89936cce87d60766a75732a9e7e25c51164f47cRefgit.kernel.org/stable/c/acb96e782bad427ca4bb1bd94af660acd1462380Refgit.kernel.org/stable/c/0a9c36a2e06a249acbed64e8e0b84637c2ad7575Refgit.kernel.org/stable/c/2725925982dc96a78069cd118ea3d66759bfdad7

How CyberStrike helps

Frequently asked questions

What is CVE-2021-47401?

CVE-2021-47401 is a high-severity vulnerability. It was published on May 21, 2024 and has a CVSS 3.1 base score of 7.1 (HIGH).

How severe is CVE-2021-47401?

This vulnerability has a CVSS 3.1 base score of 7.1, rated HIGH. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2021-47401?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-47401?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-47401 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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