github - ghsa-hhg2-g5jr-6wrx

GHSA-HHG2-G5JR-6WRX

Vulnerability from github – Published: 2024-02-27 21:31 – Updated: 2024-04-10 21:30

Details

In the Linux kernel, the following vulnerability has been resolved:

usb: dwc3: core: Do core softreset when switch mode

According to the programming guide, to switch mode for DRD controller, the driver needs to do the following.

To switch from device to host: 1. Reset controller with GCTL.CoreSoftReset 2. Set GCTL.PrtCapDir(host mode) 3. Reset the host with USBCMD.HCRESET 4. Then follow up with the initializing host registers sequence

To switch from host to device: 1. Reset controller with GCTL.CoreSoftReset 2. Set GCTL.PrtCapDir(device mode) 3. Reset the device with DCTL.CSftRst 4. Then follow up with the initializing registers sequence

Currently we're missing step 1) to do GCTL.CoreSoftReset and step 3) of switching from host to device. John Stult reported a lockup issue seen with HiKey960 platform without these steps[1]. Similar issue is observed with Ferry's testing platform[2].

So, apply the required steps along with some fixes to Yu Chen's and John Stultz's version. The main fixes to their versions are the missing wait for clocks synchronization before clearing GCTL.CoreSoftReset and only apply DCTL.CSftRst when switching from host to device.

[1] https://lore.kernel.org/linux-usb/20210108015115.27920-1-john.stultz@linaro.org/ [2] https://lore.kernel.org/linux-usb/0ba7a6ba-e6a7-9cd4-0695-64fc927e01f1@gmail.com/

Severity ?

5.5 (Medium)


                  
                    CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

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{
  "affected": [],
  "aliases": [
    "CVE-2021-46941"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2024-02-27T19:04:05Z",
    "severity": "MODERATE"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: core: Do core softreset when switch mode\n\n\nAccording to the programming guide, to switch mode for DRD controller,\nthe driver needs to do the following.\n\nTo switch from device to host:\n1. Reset controller with GCTL.CoreSoftReset\n2. Set GCTL.PrtCapDir(host mode)\n3. Reset the host with USBCMD.HCRESET\n4. Then follow up with the initializing host registers sequence\n\nTo switch from host to device:\n1. Reset controller with GCTL.CoreSoftReset\n2. Set GCTL.PrtCapDir(device mode)\n3. Reset the device with DCTL.CSftRst\n4. Then follow up with the initializing registers sequence\n\nCurrently we\u0027re missing step 1) to do GCTL.CoreSoftReset and step 3) of\nswitching from host to device. John Stult reported a lockup issue seen\nwith HiKey960 platform without these steps[1]. Similar issue is observed\nwith Ferry\u0027s testing platform[2].\n\nSo, apply the required steps along with some fixes to Yu Chen\u0027s and John\nStultz\u0027s version. The main fixes to their versions are the missing wait\nfor clocks synchronization before clearing GCTL.CoreSoftReset and only\napply DCTL.CSftRst when switching from host to device.\n\n[1] https://lore.kernel.org/linux-usb/20210108015115.27920-1-john.stultz@linaro.org/\n[2] https://lore.kernel.org/linux-usb/0ba7a6ba-e6a7-9cd4-0695-64fc927e01f1@gmail.com/",
  "id": "GHSA-hhg2-g5jr-6wrx",
  "modified": "2024-04-10T21:30:28Z",
  "published": "2024-02-27T21:31:26Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2021-46941"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/1c10fd60c8595ea7ff7e29d3cf1fa88069941da3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/800f58217626c8b147aa40660e572ed8a0d56e3b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f88359e1588b85cf0e8209ab7d6620085f3441d9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fce7bbcd07d59ac30dba8ce225316b3b4c1c7b50"
    }
  ],
  "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"
    }
  ]
}

CVE-2021-46941 (GCVE-0-2021-46941)

Vulnerability from cvelistv5 – Published: 2024-02-27 18:40 – Updated: 2025-05-04 07:00

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: core: Do core softreset when switch mode According to the programming guide, to switch mode for DRD controller, the driver needs to do the following. To switch from device to host: 1. Reset controller with GCTL.CoreSoftReset 2. Set GCTL.PrtCapDir(host mode) 3. Reset the host with USBCMD.HCRESET 4. Then follow up with the initializing host registers sequence To switch from host to device: 1. Reset controller with GCTL.CoreSoftReset 2. Set GCTL.PrtCapDir(device mode) 3. Reset the device with DCTL.CSftRst 4. Then follow up with the initializing registers sequence Currently we're missing step 1) to do GCTL.CoreSoftReset and step 3) of switching from host to device. John Stult reported a lockup issue seen with HiKey960 platform without these steps[1]. Similar issue is observed with Ferry's testing platform[2]. So, apply the required steps along with some fixes to Yu Chen's and John Stultz's version. The main fixes to their versions are the missing wait for clocks synchronization before clearing GCTL.CoreSoftReset and only apply DCTL.CSftRst when switching from host to device. [1] https://lore.kernel.org/linux-usb/20210108015115.27920-1-john.stultz@linaro.org/ [2] https://lore.kernel.org/linux-usb/0ba7a6ba-e6a7-9cd4-0695-64fc927e01f1@gmail.com/

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/fce7bbcd07d59ac30…
	https://git.kernel.org/stable/c/800f58217626c8b14…
	https://git.kernel.org/stable/c/1c10fd60c8595ea7f…
	https://git.kernel.org/stable/c/f88359e1588b85cf0…

Impacted products

Vendor

Product

Version

Linux

Affected: 41ce1456e1dbbc7355d0fcc10cf7c337c13def24 , < fce7bbcd07d59ac30dba8ce225316b3b4c1c7b50 (git)
Affected: 41ce1456e1dbbc7355d0fcc10cf7c337c13def24 , < 800f58217626c8b147aa40660e572ed8a0d56e3b (git)
Affected: 41ce1456e1dbbc7355d0fcc10cf7c337c13def24 , < 1c10fd60c8595ea7ff7e29d3cf1fa88069941da3 (git)
Affected: 41ce1456e1dbbc7355d0fcc10cf7c337c13def24 , < f88359e1588b85cf0e8209ab7d6620085f3441d9 (git)

Linux

Affected: 4.12
Unaffected: 0 , < 4.12 (semver)
Unaffected: 5.10.36 , ≤ 5.10.* (semver)
Unaffected: 5.11.20 , ≤ 5.11.* (semver)
Unaffected: 5.12.3 , ≤ 5.12.* (semver)
Unaffected: 5.13 , ≤ * (original_commit_for_fix)

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Sightings

Author	Source	Type	Date

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-HHG2-G5JR-6WRX

CVE-2021-46941 (GCVE-0-2021-46941)

Tags

Sightings

Nomenclature