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CVE-2024-41027

3.3 · LOW

In the Linux kernel, the following vulnerability has been resolved: Fix userfaultfd_api to return EINVAL as expected Currently if we request a feature that is not set in the Kernel config we fail…

Published Jul 29, 2024EPSS 0.28%

Overview

CVE-2024-41027 is a low-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. 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:

Fix userfaultfd_api to return EINVAL as expected

Currently if we request a feature that is not set in the Kernel config we

fail silently and return all the available features. However, the man

page indicates we should return an EINVAL.

We need to fix this issue since we can end up with a Kernel warning should

a program request the feature UFFD_FEATURE_WP_UNPOPULATED on a kernel with

the config not set with this feature.

[ 200.812896] WARNING: CPU: 91 PID: 13634 at mm/memory.c:1660 zap_pte_range+0x43d/0x660

[ 200.820738] Modules linked in:

[ 200.869387] CPU: 91 PID: 13634 Comm: userfaultfd Kdump: loaded Not tainted 6.9.0-rc5+ #8

[ 200.877477] Hardware name: Dell Inc. PowerEdge R6525/0N7YGH, BIOS 2.7.3 03/30/2022

[ 200.885052] RIP: 0010:zap_pte_range+0x43d/0x660

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/14875fd5f9bcf60ac5518c63bfb676ade44aa7c6Refgit.kernel.org/stable/c/1723f04caacb32cadc4e063725d836a0c4450694Refgit.kernel.org/stable/c/519547760f16eae7803d2658d9524bc5ba7a20a7Refgit.kernel.org/stable/c/8111f902b7c95d75fc80c7e577f5045886c6b384Refgit.kernel.org/stable/c/cd94cac4069a763ab5206be2c64c9a8beae590baRefgit.kernel.org/stable/c/14875fd5f9bcf60ac5518c63bfb676ade44aa7c6Refgit.kernel.org/stable/c/1723f04caacb32cadc4e063725d836a0c4450694Refgit.kernel.org/stable/c/519547760f16eae7803d2658d9524bc5ba7a20a7Refgit.kernel.org/stable/c/8111f902b7c95d75fc80c7e577f5045886c6b384Refgit.kernel.org/stable/c/cd94cac4069a763ab5206be2c64c9a8beae590ba

How CyberStrike helps

Frequently asked questions

What is CVE-2024-41027?

CVE-2024-41027 is a low-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 3.3 (LOW).

How severe is CVE-2024-41027?

This vulnerability has a CVSS 3.1 base score of 3.3, rated LOW. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-41027?

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-2024-41027?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-41027 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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