CVE-2024-46760

5.5 · MEDIUM

Published Sep 18, 2024 linux CWE-476 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-2024-46760 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 18, 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:

wifi: rtw88: usb: schedule rx work after everything is set up

Right now it's possible to hit NULL pointer dereference in

rtw_rx_fill_rx_status on hw object and/or its fields because

initialization routine can start getting USB replies before

rtw_dev is fully setup.

The stack trace looks like this:

rtw_rx_fill_rx_status

rtw8821c_query_rx_desc

rtw_usb_rx_handler

...

queue_work

rtw_usb_read_port_complete

...

usb_submit_urb

rtw_usb_rx_resubmit

rtw_usb_init_rx

rtw_usb_probe

So while we do the async stuff rtw_usb_probe continues and calls

rtw_register_hw, which does all kinds of initialization (e.g.

via ieee80211_register_hw) that rtw_rx_fill_rx_status relies on.

Fix this by moving the first usb_submit_urb after everything

is set up.

For me, this bug manifested as:

[ 8.893177] rtw_8821cu 1-1:1.2: band wrong, packet dropped

[ 8.910904] rtw_8821cu 1-1:1.2: hw->conf.chandef.chan NULL in rtw_rx_fill_rx_status

becaus

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	>= 0, < 6.6.51	Affected

References

Ref git.kernel.org/stable/c/25eaef533bf3ccc6fee5067aac16f41f280e343e Ref git.kernel.org/stable/c/adc539784c98a7cc602cbf557debfc2e7b9be8b3 Ref git.kernel.org/stable/c/c83d464b82a8ad62ec9077637f75d73fe955635a

Frequently Asked Questions

What is CVE-2024-46760?

CVE-2024-46760 is a medium-severity vulnerability affecting linux linux_kernel. It was published on September 18, 2024 and has a CVSS 3.1 base score of 5.5 (MEDIUM).

How severe is CVE-2024-46760?

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-2024-46760?

How can CyberStrike help with CVE-2024-46760?

CyberStrike's AI-powered security agents can automatically detect CVE-2024-46760 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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HackBrowser

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