{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-64337",
  "modified": "2026-10-07T17:22:01Z",
  "upstream": [
    "CVE-2026-64337"
  ],
  "published": "2026-07-25T08:51:45Z",
  "summary": "usb: mtu3: unmap request DMA on queue failure",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: mtu3: unmap request DMA on queue failure\n\nmtu3_gadget_queue() maps the request before checking whether\nthe QMU GPD ring can accept another transfer. the request is\nreturned with -EAGAIN before it is linked on the endpoint\nrequest list if mtu3_prepare_transfer() fails.\n\nNormal completion and dequeue paths unmap requests from\nmtu3_req_complete(), but this error path never reaches that\nhelper, so the DMA mapping is left active. Unmap the request\nbefore returning from the failed queue path.",
  "affected": [
    {
      "package": {
        "ecosystem": "Raspberry Pi OS:12",
        "name": "linux"
      },
      "versions": [
        "1:6.1.47-1+rpt4"
      ],
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-2712",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v6",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v7l",
            "binary_version": "1:6.1.47-1+rpt4"
          },
          {
            "binary_name": "linux-image-6.1.0-rpi3-rpi-v8",
            "binary_version": "1:6.1.47-1+rpt4"
          }
        ]
      },
      "database_specific": {
        "per_version": {
          "1:6.1.47-1+rpt4": {
            "linux_commit": "655fc658a15ae7a6f37103754adb39ba52a9a14e",
            "upstream_version": "6.1.47",
            "assessment": "commit ancestry (strak rule)",
            "upstream_fixed": "6.1.178",
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-64337"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/3cee30f1138281a1d247bb053a1ad4f7c5b04e98"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/f3c4026524d3660c73ef2838b99776d37631e039"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e8f739a3860d043dcc135371637e82f53132efe5"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/4183874b7925f4a98b400cf857bea26ee87da236"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/00c3fef4c2dc2c7cbd8281f8fda09d1913420f09"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/8c29d9cfab1c3cf0d0b7fcdf9255597be30aa3e1"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/835b0596d4c9bdef93f842d8f826978fb4956b74"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/0bddda5a11665c210339de76d27ebbd1a2e0b43c"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-08-17T05:24:08Z"
  }
}