FKIE_CVE-2024-36977

Vulnerability from fkie_nvd - Published: 2024-06-18 20:15 - Updated: 2025-10-01 15:53
Severity ?
5.5 (Medium) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.7 (Medium) - CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
Summary
In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: Wait unconditionally after issuing EndXfer command Currently all controller IP/revisions except DWC3_usb3 >= 310a wait 1ms unconditionally for ENDXFER completion when IOC is not set. This is because DWC_usb3 controller revisions >= 3.10a supports GUCTL2[14: Rst_actbitlater] bit which allows polling CMDACT bit to know whether ENDXFER command is completed. Consider a case where an IN request was queued, and parallelly soft_disconnect was called (due to ffs_epfile_release). This eventually calls stop_active_transfer with IOC cleared, hence send_gadget_ep_cmd() skips waiting for CMDACT cleared during EndXfer. For DWC3 controllers with revisions >= 310a, we don't forcefully wait for 1ms either, and we proceed by unmapping the requests. If ENDXFER didn't complete by this time, it leads to SMMU faults since the controller would still be accessing those requests. Fix this by ensuring ENDXFER completion by adding 1ms delay in __dwc3_stop_active_transfer() unconditionally.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1ba145f05b5c8f0b1a947a0633b5edff5dd1f1c5Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/1d26ba0944d398f88aaf997bda3544646cf21945Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/341eb08dbca9eae05308c442fbfab1813a44c97aPatch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4a387e032909c6dc2b479452c5bbe9a252057925Patch
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ec96bcf5f96a7a5c556b0e881ac3e5c3924d542cPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1ba145f05b5c8f0b1a947a0633b5edff5dd1f1c5Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/1d26ba0944d398f88aaf997bda3544646cf21945Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/341eb08dbca9eae05308c442fbfab1813a44c97aPatch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/4a387e032909c6dc2b479452c5bbe9a252057925Patch
af854a3a-2127-422b-91ae-364da2661108https://git.kernel.org/stable/c/ec96bcf5f96a7a5c556b0e881ac3e5c3924d542cPatch
Impacted products
Vendor Product Version
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
linux linux_kernel *
To clipboard 

{
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: Wait unconditionally after issuing EndXfer command\n\nCurrently all controller IP/revisions except DWC3_usb3 \u003e= 310a\nwait 1ms unconditionally for ENDXFER completion when IOC is not\nset. This is because DWC_usb3 controller revisions \u003e= 3.10a\nsupports GUCTL2[14: Rst_actbitlater] bit which allows polling\nCMDACT bit to know whether ENDXFER command is completed.\n\nConsider a case where an IN request was queued, and parallelly\nsoft_disconnect was called (due to ffs_epfile_release). This\neventually calls stop_active_transfer with IOC cleared, hence\nsend_gadget_ep_cmd() skips waiting for CMDACT cleared during\nEndXfer. For DWC3 controllers with revisions \u003e= 310a, we don\u0027t\nforcefully wait for 1ms either, and we proceed by unmapping the\nrequests. If ENDXFER didn\u0027t complete by this time, it leads to\nSMMU faults since the controller would still be accessing those\nrequests.\n\nFix this by ensuring ENDXFER completion by adding 1ms delay in\n__dwc3_stop_active_transfer() unconditionally."
    },
    {
      "lang": "es",
      "value": "En el kernel de Linux, se resolvi\u00f3 la siguiente vulnerabilidad: usb: dwc3: Espere incondicionalmente despu\u00e9s de emitir el comando EndXfer Actualmente, todas las IP/revisiones del controlador excepto DWC3_usb3 \u0026gt;= 310a esperan 1 ms incondicionalmente para que ENDXFER se complete cuando el IOC no est\u00e1 configurado. Esto se debe a que las revisiones del controlador DWC_usb3 \u0026gt;= 3.10a admiten el bit GUCTL2[14: Rst_actbitlater] que permite sondear el bit CMDACT para saber si se complet\u00f3 el comando ENDXFER. Considere un caso en el que se puso en cola una solicitud IN y, en paralelo, se llam\u00f3 a soft_disconnect (debido a ffs_epfile_release). Esto eventualmente llama a stop_active_transfer con el IOC borrado, por lo tanto, send_gadget_ep_cmd() omite la espera de que CMDACT se borre durante EndXfer. Para los controladores DWC3 con revisiones \u0026gt;= 310a, tampoco esperamos forzosamente 1 ms y procedemos a desasignar las solicitudes. Si ENDXFER no se complet\u00f3 en este momento, se producir\u00e1n fallas de SMMU ya que el controlador a\u00fan estar\u00eda accediendo a esas solicitudes. Solucione este problema asegurando la finalizaci\u00f3n de ENDXFER agregando un retraso de 1 ms en __dwc3_stop_active_transfer() incondicionalmente."
    }
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  "id": "CVE-2024-36977",
  "lastModified": "2025-10-01T15:53:43.503",
  "metrics": {
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          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
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  "published": "2024-06-18T20:15:13.517",
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  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "nvd@nist.gov",
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}


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