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CVE-2024-27405

7.5 · HIGH
Published May 17, 2024 linux CWE-476 EPSS 1.30% (68th pctl)

Overview

CVE-2024-27405 is a high-severity vulnerability affecting linux linux_kernel. It was published on May 17, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical Description

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

usb: gadget: ncm: Avoid dropping datagrams of properly parsed NTBs

It is observed sometimes when tethering is used over NCM with Windows 11

as host, at some instances, the gadget_giveback has one byte appended at

the end of a proper NTB. When the NTB is parsed, unwrap call looks for

any leftover bytes in SKB provided by u_ether and if there are any pending

bytes, it treats them as a separate NTB and parses it. But in case the

second NTB (as per unwrap call) is faulty/corrupt, all the datagrams that

were parsed properly in the first NTB and saved in rx_list are dropped.

Adding a few custom traces showed the following:

[002] d..1 7828.532866: dwc3_gadget_giveback: ep1out:

req 000000003868811a length 1025/16384 zsI ==> 0

[002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb toprocess: 1025

[002] d..1 7828.532867: ncm_unwrap_ntb: K: ncm_unwrap_ntb nth: 1751999342

[002] d..1 7828.532868: ncm_unwrap_ntb: K: ncm_un

Remediation

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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.

Affected Products

Vendor Product Versions Status
linux linux_kernel >= 2.6.38, < 4.19.308 Affected

Frequently Asked Questions

What is CVE-2024-27405?

CVE-2024-27405 is a high-severity vulnerability affecting linux linux_kernel. It was published on May 17, 2024 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-2024-27405?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2024-27405?

Check the references section for vendor advisories and patches from linux. Update linux_kernel to the latest patched version. 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-2024-27405?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-27405 across your infrastructure using autonomous pentesting, DAST scanning, and HackBrowser. The platform continuously monitors for known vulnerabilities and provides actionable remediation guidance prioritized by real-world exploitability.