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CVE PROGRAM SOURCE RECORDUnscored

CVE-2024-42085

usb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock

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Status
Published
Published
Updated
Assigning organization
Linux

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Linux Linux

Default version status: unaffected

  • f2bfd0a2a640ca2f308b6893a89cfb2ec31e8fde to < 8731a0b180f6b5d52397c7aeea6eda9511a467a7affected
  • 2fa487a9466760a4fb6f147aed6219379dabfc2e to < 7026576e89094aa9a0062aa6d10cba18aa99944caffected
  • 5265397f94424eaea596026fd34dc7acf474dcec to < d77e2b5104c51d3668b9717c825a4a06998efe63affected
  • 5265397f94424eaea596026fd34dc7acf474dcec to < 17e2956633ca560b95f1cbbb297cfc2adf650649affected
  • 5265397f94424eaea596026fd34dc7acf474dcec to < f1274cfab183e69a7c7bafffcb4f50703c876276affected
  • 5265397f94424eaea596026fd34dc7acf474dcec to < 7838de15bb700c2898a7d741db9b1f3cbc86c136affected
  • 5.15.128 to < 5.15.162affected

Linux Linux

Default version status: affected

  • 6.1affected
  • 0 to < 6.1unaffected
  • 5.15.162 to ≤ 5.15.*unaffected
  • 6.1.97 to ≤ 6.1.*unaffected
  • 6.6.37 to ≤ 6.6.*unaffected
  • 6.9.8 to ≤ 6.9.*unaffected
  • 6.10 to ≤ *unaffected

References