CVE-2024-42244

5.5 · MEDIUM

Published Aug 7, 2024 linux EPSS 0.23% (14th pctl) CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Overview

CVE-2024-42244 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 7, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. 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:

USB: serial: mos7840: fix crash on resume

Since commit c49cfa917025 ("USB: serial: use generic method if no

alternative is provided in usb serial layer"), USB serial core calls the

generic resume implementation when the driver has not provided one.

This can trigger a crash on resume with mos7840 since support for

multiple read URBs was added back in 2011. Specifically, both port read

URBs are now submitted on resume for open ports, but the context pointer

of the second URB is left set to the core rather than mos7840 port

structure.

Fix this by implementing dedicated suspend and resume functions for

mos7840.

Tested with Delock 87414 USB 2.0 to 4x serial adapter.

[ johan: analyse crash and rewrite commit message; set busy flag on

resume; drop bulk-in check; drop unnecessary usb_kill_urb() ]

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	>= 3.3, < 5.10.222	Affected

References

Ref git.kernel.org/stable/c/1094ed500987e67a9d18b0f95e1812f1cc720856 Ref git.kernel.org/stable/c/553e67dec846323b5575e78a776cf594c13f98c4 Ref git.kernel.org/stable/c/5ae6a64f18211851c8df6b4221381c438b9a7348 Ref git.kernel.org/stable/c/932a86a711c722b45ed47ba2103adca34d225b33 Ref git.kernel.org/stable/c/b14aa5673e0a8077ff4b74f0bb260735e7d5e6a4 Ref git.kernel.org/stable/c/c15a688e49987385baa8804bf65d570e362f8576 Ref lists.debian.org/debian-lts-announce/2025/01/msg00001.html

Frequently Asked Questions

What is CVE-2024-42244?

CVE-2024-42244 is a medium-severity vulnerability affecting linux linux_kernel. It was published on August 7, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-42244?

This vulnerability has a CVSS 3.1 base score of 5.5, rated MEDIUM. It requires local or adjacent network access to exploit. Some level of privileges is required for exploitation.

How do I fix or remediate CVE-2024-42244?

How can CyberStrike help with CVE-2024-42244?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-42244 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.

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