CVE-2024-42085

CVE Details

Release Date:	2024-07-29
Impact:	Low	What is this?

Description

In the Linux kernel, the following vulnerability has been resolved:\nusb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock\nWhen config CONFIG_USB_DWC3_DUAL_ROLE is selected, and trigger system\nto enter suspend status with below command:\necho mem > /sys/power/state\nThere will be a deadlock issue occurring. Detailed invoking path as\nbelow:\ndwc3_suspend_common()\nspin_lock_irqsave(&dwc->lock, flags); <-- 1st\ndwc3_gadget_suspend(dwc);\ndwc3_gadget_soft_disconnect(dwc);\nspin_lock_irqsave(&dwc->lock, flags); <-- 2nd\nThis issue is exposed by commit c7ebd8149ee5 ('usb: dwc3: gadget: Fix\nNULL pointer dereference in dwc3_gadget_suspend') that removes the code\nof checking whether dwc->gadget_driver is NULL or not. It causes the\nfollowing code is executed and deadlock occurs when trying to get the\nspinlock. In fact, the root cause is the commit 5265397f9442('usb: dwc3:\nRemove DWC3 locking during gadget suspend/resume') that forgot to remove\nthe lock of otg mode. So, remove the redundant lock of otg mode during\ngadget suspend/resume.

See more information about CVE-2024-42085 from MITRE CVE dictionary and NIST NVD

NOTE: The following CVSS metrics and score provided are preliminary and subject to review.

CVSS v3 metrics

Base Score:	5.5
Vector String:	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Version:	3.1
Attack Vector:	Local
Attack Complexity:	Low
Privileges Required:	Low
User Interaction:	None
Scope:	Unchanged
Confidentiality Impact:	None
Integrity Impact:	None
Availability Impact:	High

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