CVE-2024-41090

HIGH
Published Jul 29, 2024 Modified Nov 3, 2025 CWE-125

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

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CVSS v3.1 Score

7.1
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:H

Weakness Type (CWE)

CWE-125 Out-of-bounds Read

Affected Products

Vendor Product
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel
linux linux_kernel

References

Advisories & Patches

https://git.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483da https://git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f https://git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdea https://git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aa https://git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309 https://git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6 https://git.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3 https://git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46 https://git.kernel.org/stable/c/73d462a38d5f782b7c872fe9ae8393d9ef5483da https://git.kernel.org/stable/c/7431144b406ae82807eb87d8c98e518475b0450f https://git.kernel.org/stable/c/8be915fc5ff9a5e296f6538be12ea75a1a93bdea https://git.kernel.org/stable/c/aa6a5704cab861c9b2ae9f475076e1881e87f5aa https://git.kernel.org/stable/c/e1a786b9bbb767fd1c922d424aaa8078cc542309 https://git.kernel.org/stable/c/e5e5e63c506b93b89b01f522b6a7343585f784e6 https://git.kernel.org/stable/c/ed7f2afdd0e043a397677e597ced0830b83ba0b3 https://git.kernel.org/stable/c/ee93e6da30377cf2a75e16cd32bb9fcd86a61c46

Frequently Asked Questions

What is CVE-2024-41090? +
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 It has a CVSS v3.1 base score of 7.1 (HIGH).
How severe is CVE-2024-41090? +
CVE-2024-41090 has a CVSS v3.1 score of 7.1 out of 10, rated HIGH. This is a high-severity vulnerability that should be prioritized for patching.
What products are affected by CVE-2024-41090? +
CVE-2024-41090 affects products from linux, specifically: linux_kernel. Check the affected products table above for specific version ranges.
How do I check if I'm vulnerable to CVE-2024-41090? +
You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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