CVE-2024-26715

medium

Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend In current scenario if Plug-out and Plug-In performed continuously there could be a chance while checking for dwc->gadget_driver in dwc3_gadget_suspend, a NULL pointer dereference may occur. Call Stack: CPU1: CPU2: gadget_unbind_driver dwc3_suspend_common dwc3_gadget_stop dwc3_gadget_suspend dwc3_disconnect_gadget CPU1 basically clears the variable and CPU2 checks the variable. Consider CPU1 is running and right before gadget_driver is cleared and in parallel CPU2 executes dwc3_gadget_suspend where it finds dwc->gadget_driver which is not NULL and resumes execution and then CPU1 completes execution. CPU2 executes dwc3_disconnect_gadget where it checks dwc->gadget_driver is already NULL because of which the NULL pointer deference occur.

References

https://git.kernel.org/stable/c/c7ebd8149ee519d27232e6e4940e9c02071b568b

https://git.kernel.org/stable/c/88936ceab6b426f1312327e9ef849c215c6007a7

https://git.kernel.org/stable/c/61a348857e869432e6a920ad8ea9132e8d44c316

https://git.kernel.org/stable/c/57e2e42ccd3cd6183228269715ed032f44536751

https://git.kernel.org/stable/c/36695d5eeeefe5a64b47d0336e7c8fc144e78182

Details

Source: Mitre, NVD

Published: 2024-04-03

Updated: 2024-04-03

Risk Information

CVSS v2

Base Score: 4.6

Vector: CVSS2#AV:L/AC:L/Au:S/C:N/I:N/A:C

Severity: Medium

CVSS v3

Base Score: 4.3

Vector: CVSS:3.0/AV:P/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Severity: Medium