ghsa-mhpr-v3hf-gcxg
Vulnerability from github
Published
2024-07-29 18:30
Modified
2024-08-26 15:31
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Details

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.

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{
   affected: [],
   aliases: [
      "CVE-2024-42085",
   ],
   database_specific: {
      cwe_ids: [
         "CWE-667",
      ],
      github_reviewed: false,
      github_reviewed_at: null,
      nvd_published_at: "2024-07-29T17:15:11Z",
      severity: "MODERATE",
   },
   details: "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: core: remove lock of otg mode during gadget suspend/resume to avoid deadlock\n\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()\n    spin_lock_irqsave(&dwc->lock, flags);              <-- 1st\n    dwc3_gadget_suspend(dwc);\n        dwc3_gadget_soft_disconnect(dwc);\n            spin_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.",
   id: "GHSA-mhpr-v3hf-gcxg",
   modified: "2024-08-26T15:31:14Z",
   published: "2024-07-29T18:30:40Z",
   references: [
      {
         type: "ADVISORY",
         url: "https://nvd.nist.gov/vuln/detail/CVE-2024-42085",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/17e2956633ca560b95f1cbbb297cfc2adf650649",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/7026576e89094aa9a0062aa6d10cba18aa99944c",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/7838de15bb700c2898a7d741db9b1f3cbc86c136",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/d77e2b5104c51d3668b9717c825a4a06998efe63",
      },
      {
         type: "WEB",
         url: "https://git.kernel.org/stable/c/f1274cfab183e69a7c7bafffcb4f50703c876276",
      },
   ],
   schema_version: "1.4.0",
   severity: [
      {
         score: "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
         type: "CVSS_V3",
      },
   ],
}


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