Vulnerability-Lookup

FKIE_CVE-2026-90030

Vulnerability from fkie_nvd - Published: 2026-09-16 11:17 - Updated: 2026-09-16 15:18

Severity

7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Summary

In the Linux kernel, the following vulnerability has been resolved: usb: dwc3: clear forceRM when issuing EndTransfer The forceRM bit of the DEPCMD register controls the behavior of the EndTransfer command used to stop an active transfer. Older DWC3 programming guide revisions recommended setting forceRM=1 when issuing EndTransfer. Newer programming guide revisions recommend issuing EndTransfer with forceRM cleared. With forceRM=1 on DWC_usb31 v2.00a and v2.10a controllers, a transfer aborted through the ep_dequeue path was observed to remain active after EndTransfer completion. A subsequent StartTransfer issued on the same endpoint triggered writes associated with the aborted transfer. This resulted in an SMMU fault because the transfer buffer had already been unmapped during EndTransfer command-completion cleanup. Using forceRM=0 eliminates the issue. Although older DWC3 programming guide revisions recommended setting forceRM=1, no issues are known from using forceRM=0. Clear forceRM when issuing EndTransfer to provide consistent EndTransfer behavior and align with newer programming guide recommendations.

References

	URL	Tags
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/0afe5c31612de3d18cc6d16e616da4a48ba1e5a2
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/b58e6200450d350314db0ecda7d6d1bde3281e80
	416baaa9-dc9f-4396-8d5f-8c081fb06d67	https://git.kernel.org/stable/c/e01408ee52fe5cb2d0b43f47f359336af2b6c316

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc3/ep0.c",
            "drivers/usb/dwc3/gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0afe5c31612de3d18cc6d16e616da4a48ba1e5a2",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "lessThan": "e01408ee52fe5cb2d0b43f47f359336af2b6c316",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "lessThan": "b58e6200450d350314db0ecda7d6d1bde3281e80",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ab99c4be945724b032cc55e05c6738fe1d84bf70",
              "versionType": "git"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.37",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc3/ep0.c",
            "drivers/usb/dwc3/gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: clear forceRM when issuing EndTransfer\n\nThe forceRM bit of the DEPCMD register controls the behavior of the\nEndTransfer command used to stop an active transfer. Older DWC3\nprogramming guide revisions recommended setting forceRM=1 when\nissuing EndTransfer. Newer programming guide revisions recommend\nissuing EndTransfer with forceRM cleared.\n\nWith forceRM=1 on DWC_usb31 v2.00a and v2.10a controllers, a transfer\naborted through the ep_dequeue path was observed to remain active\nafter EndTransfer completion. A subsequent StartTransfer issued on the\nsame endpoint triggered writes associated with the aborted transfer.\nThis resulted in an SMMU fault because the transfer buffer had already\nbeen unmapped during EndTransfer command-completion cleanup.\n\nUsing forceRM=0 eliminates the issue. Although older DWC3 programming\nguide revisions recommended setting forceRM=1, no issues are known\nfrom using forceRM=0. Clear forceRM when issuing EndTransfer to provide\nconsistent EndTransfer behavior and align with newer programming guide\nrecommendations."
    }
  ],
  "id": "CVE-2026-90030",
  "lastModified": "2026-09-16T15:18:26.160",
  "metrics": {
    "cvssMetricV31": [
      {
        "cvssData": {
          "attackComplexity": "LOW",
          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "type": "Secondary"
      }
    ]
  },
  "published": "2026-09-16T11:17:16.070",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0afe5c31612de3d18cc6d16e616da4a48ba1e5a2"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/b58e6200450d350314db0ecda7d6d1bde3281e80"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/e01408ee52fe5cb2d0b43f47f359336af2b6c316"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}

CVE-2026-90030 (GCVE-0-2026-90030)

Vulnerability from cvelistv5 – Published: 2026-09-16 10:33 – Updated: 2026-09-16 14:41

Title

usb: dwc3: clear forceRM when issuing EndTransfer

Summary

Severity

7.8 (High)


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

Assigner

Linux mitre root

References

3 references

URL	Tags
https://git.kernel.org/stable/c/0afe5c31612de3d18…
https://git.kernel.org/stable/c/e01408ee52fe5cb2d…
https://git.kernel.org/stable/c/b58e6200450d35031…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 1e43c86d84fb0503e82a143e017f35421498fc1a , < 0afe5c31612de3d18cc6d16e616da4a48ba1e5a2 (git) Affected: 1e43c86d84fb0503e82a143e017f35421498fc1a , < e01408ee52fe5cb2d0b43f47f359336af2b6c316 (git) Affected: 1e43c86d84fb0503e82a143e017f35421498fc1a , < b58e6200450d350314db0ecda7d6d1bde3281e80 (git) Affected: ab99c4be945724b032cc55e05c6738fe1d84bf70 (git) Affected: 6.6.37 , < 6.7 (semver)
Linux	Linux	Affected: 6.9 Unaffected: 0 , < 6.9 (semver) Unaffected: 6.18.51 , ≤ 6.18.* (semver) Unaffected: 7.2.5 , ≤ 7.2.* (semver) Unaffected: 7.3-rc2 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc3/ep0.c",
            "drivers/usb/dwc3/gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0afe5c31612de3d18cc6d16e616da4a48ba1e5a2",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "lessThan": "e01408ee52fe5cb2d0b43f47f359336af2b6c316",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "lessThan": "b58e6200450d350314db0ecda7d6d1bde3281e80",
              "status": "affected",
              "version": "1e43c86d84fb0503e82a143e017f35421498fc1a",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "ab99c4be945724b032cc55e05c6738fe1d84bf70",
              "versionType": "git"
            },
            {
              "lessThan": "6.7",
              "status": "affected",
              "version": "6.6.37",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/usb/dwc3/ep0.c",
            "drivers/usb/dwc3/gadget.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.9"
            },
            {
              "lessThan": "6.9",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.51",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.5",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3-rc2",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.51",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.5",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3-rc2",
                  "versionStartIncluding": "6.9",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionStartIncluding": "6.6.37",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: dwc3: clear forceRM when issuing EndTransfer\n\nThe forceRM bit of the DEPCMD register controls the behavior of the\nEndTransfer command used to stop an active transfer. Older DWC3\nprogramming guide revisions recommended setting forceRM=1 when\nissuing EndTransfer. Newer programming guide revisions recommend\nissuing EndTransfer with forceRM cleared.\n\nWith forceRM=1 on DWC_usb31 v2.00a and v2.10a controllers, a transfer\naborted through the ep_dequeue path was observed to remain active\nafter EndTransfer completion. A subsequent StartTransfer issued on the\nsame endpoint triggered writes associated with the aborted transfer.\nThis resulted in an SMMU fault because the transfer buffer had already\nbeen unmapped during EndTransfer command-completion cleanup.\n\nUsing forceRM=0 eliminates the issue. Although older DWC3 programming\nguide revisions recommended setting forceRM=1, no issues are known\nfrom using forceRM=0. Clear forceRM when issuing EndTransfer to provide\nconsistent EndTransfer behavior and align with newer programming guide\nrecommendations."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "scenarios": [
            {
              "lang": "en",
              "value": "AV:L - The documented trigger is dwc3_gadget_ep_dequeue(), reached from FunctionFS via usb_ep_dequeue() on ordinary local syscalls (interrupted read, aio_cancel, close, FUNCTIONFS_DMABUF_DETACH) rather than USB host packet parsing; this matches AV:L used for other f_fs/dwc3 EndXfer bugs (CVE-2024-36977, CVE-2024-36894).\nAC:L - On affected DWC_usb31 controllers the attacker deterministically queues a request, dequeues it so EndTransfer runs with forceRM=1, then queues again so StartTransfer replays DMA to the already-unmapped buffer; no uncontrolled race is involved, and v2.00a/v2.10a hardware is common on Qualcomm phones and embedded boards.\nPR:L - FunctionFS endpoint nodes are routinely delegated to unprivileged gadget daemons (adbd/shell, MTP) via uid=/gid=/fmode=; queue, cancel, and re-queue are ordinary file operations and the dequeue path performs no capability check.\nUI:N - The attacking process performs the queue, dequeue, and re-queue itself; a USB cable being attached is an ambient condition of phones, kiosks, and embedded gadgets, not a separate victim action the attacker must induce.\nS:U - Stale controller DMA targets the transfer buffer the gadget had already mapped in the same kernel; this is not a VM escape or IOMMU-domain bypass, and an SMMU, when present, faults the access rather than being circumvented.\nC:H - The same EndTransfer forceRM mishandling applies to IN endpoints, so after unmap the still-active transfer can DMA-read reused pages onto the USB bus; per kernel UAF guidance this memory-corruption primitive also yields kernel disclosure once backing pages are reallocated.\nI:H - The issue was reproduced as stale DMA writes on an OUT bulk endpoint into a buffer already unmapped during EndTransfer completion cleanup, so leftover or host-supplied data is written into reallocated kernel pages, a DMA use-after-free write primitive suitable for control-flow hijacking.\nA:H - The commit reports an SMMU fault when the controller accesses the already-unmapped transfer buffer, which panics or wedges the USB/IOMMU path; without an IOMMU the same DMA use-after-free likewise oopses or panics the kernel."
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-09-16T14:41:44.818Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0afe5c31612de3d18cc6d16e616da4a48ba1e5a2"
        },
        {
          "url": "https://git.kernel.org/stable/c/e01408ee52fe5cb2d0b43f47f359336af2b6c316"
        },
        {
          "url": "https://git.kernel.org/stable/c/b58e6200450d350314db0ecda7d6d1bde3281e80"
        }
      ],
      "title": "usb: dwc3: clear forceRM when issuing EndTransfer",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-90030",
    "datePublished": "2026-09-16T10:33:31.801Z",
    "dateReserved": "2026-09-11T19:38:34.782Z",
    "dateUpdated": "2026-09-16T14:41:44.818Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Sightings

Author	Source	Type	Date	Other

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.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.