{
  "schema_version": "1.6.1",
  "id": "RPI-CVE-2026-98756",
  "modified": "2026-10-19T04:30:01Z",
  "upstream": [
    "CVE-2026-98756"
  ],
  "published": "2026-10-18T15:54:51Z",
  "summary": "usb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe",
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: cdns3: Fix NULL pointer dereference in cdns3_pci_probe\n\nThe Cadence USBSS controller is a two-function PCI device. The first\nprobed function allocates the driver data and stores it with\npci_set_drvdata(), while the second function reuses it via\npci_get_drvdata() when pci_is_enabled() reports that the first\nfunction has already been probed.\n\nWhen the second function is probed while the first one has been\nenabled but has not yet set its driver data, pci_get_drvdata()\nreturns NULL, and the subsequent wrap->devfn assignment dereferences\na NULL pointer and crashes the kernel.\nlogs:\nCall trace:\n  cdns3_pci_probe+0xa4/0x300\n  local_pci_probe+0x44/0xa8\n  pci_call_probe+0x54/0x158\n  pci_device_probe+0x84/0x100\n  really_probe+0x184/0x3d0\n  __driver_probe_device+0x80/0x178\n  driver_probe_device+0x44/0xe8\n  __driver_attach+0xec/0x1f8\n  bus_for_each_dev+0x7c/0xe0\n  driver_attach+0x28/0x38\n  bus_add_driver+0x110/0x238\n  driver_register+0x64/0x128\n  __pci_register_driver+0x50/0x60\n  cdns3_pci_driver_init+0x28/0x38\n  do_one_initcall+0x5c/0x280\n  do_initcalls+0x104/0x1d8\n  kernel_init_freeable+0x140/0x218\n  kernel_init+0x28/0x1f8\n  ret_from_fork+0x10/0x20\n\nReturn -EPROBE_DEFER in this case so that probing is retried after\nthe first function has completed its probe.",
  "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": null,
            "compiled_filter": false
          }
        }
      }
    }
  ],
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-98756"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/549c04df02f1bb5a10342f32e2c87f5d27c97279"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/d16046f1ace2691b6a946f022fe6dc215936880b"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/45b606418bae73c7cde9f0e57e5b0977c816a7c0"
    },
    {
      "type": "FIX",
      "url": "https://git.kernel.org/stable/c/e5052f2c5c73c1dcca42bafc0bc737af2b2af059"
    }
  ],
  "database_specific": {
    "source": "https://git.kernel.org/pub/scm/linux/security/vulns.git",
    "upstream_modified": "2026-10-18T15:54:51Z"
  }
}