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CVE-2024-41090

8.8 · HIGH

In the Linux kernel, the following vulnerability has been resolved: tap: add missing verification for short frame The cited commit missed to check against the validity of the frame length in the…

Published Jul 29, 2024CWE-125EPSS 0.26%

Overview

CVE-2024-41090 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 8.8, 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:

tap: add missing verification for short frame

The cited commit missed to check against the validity of the frame length

in the tap_get_user_xdp() path, which could cause a corrupted skb to be

sent downstack. Even before the skb is transmitted, the

tap_get_user_xdp()-->skb_set_network_header() may assume the size is more

than ETH_HLEN. Once transmitted, this could either cause out-of-bound

access beyond the actual length, or confuse the underlayer with incorrect

or inconsistent header length in the skb metadata.

In the alternative path, tap_get_user() already prohibits short frame which

has the length less than Ethernet header size from being transmitted.

This is to drop any frame shorter than the Ethernet header size just like

how tap_get_user() does.

CVE: CVE-2024-41090

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/73d462a38d5f782b7c872fe9ae8393d9ef5483daRefgit.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450fRefgit.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdeaRefgit.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aaRefgit.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309Refgit.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6Refgit.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3Refgit.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46Refgit.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483daRefgit.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f

How CyberStrike helps

Frequently asked questions

What is CVE-2024-41090?

CVE-2024-41090 is a high-severity vulnerability. It was published on July 29, 2024 and has a CVSS 3.1 base score of 8.8 (HIGH).

How severe is CVE-2024-41090?

This vulnerability has a CVSS 3.1 base score of 8.8, 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-2024-41090?

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-2024-41090?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2024-41090 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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