{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "2d53139f31626bad6f8983d8e519ddde2cbba921"
            },
            {
              "fixed": "e5fa9d8f40746ec3447335c9642c03410f5fd3af"
            },
            {
              "fixed": "08b1d4cab0230697bc74c63fc4e40170a7559c54"
            },
            {
              "fixed": "3be5f24e8270ba53b3c814d13689bb8644c86237"
            },
            {
              "fixed": "d512bdefd241b98f4d7bcb5bab5614a86411fad4"
            },
            {
              "fixed": "00dd025324b56d39d37e57a08f473dab3a660f30"
            },
            {
              "fixed": "02d03c61e8a7b016956acb48e8a2512d16d87517"
            },
            {
              "fixed": "4da073d57176d8e1c2bca34febfbc81d2560c1a5"
            },
            {
              "fixed": "cff06b03b530ae1fe8a13e93a7848f2130e00fb4"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.16.0"
            },
            {
              "fixed": "5.10.261"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.212"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.178"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.145"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.97"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.40"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.1.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72483.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nusb: host: max3421: Fix shift-out-of-bounds in max3421_hub_control()\n\nThe `max3421_hub_control()` function handles USB hub class requests\nto the virtual root hub. In the `default` branches of both the\n`ClearPortFeature` and `SetPortFeature` switch statements, it modifies\n`max3421_hcd-\u003eport_status` by left shifting 1 by the request's `value`\nparameter. However, it does not validate whether this shift will exceed\nthe width of `port_status`.\n\nSo if a malicious userspace task with access to the root hub via\n/dev/bus/usb/.../001 issues a USBDEVFS_CONTROL ioctl with `wValue`\ngreater than or equal to 32, the left shift operation invokes\nshift-out-of-bounds undefined behavior. This results in arbitrary\nbit corruption of `port_status`, including the normally-immutable\nchange bits, which can bypass internal state checks and confuse the\nhub status.\n\nFix this by rejecting requests whose `value` exceeds the shift width\nbefore performing the shift.\n\nThis issue was found using a KLEE-based symbolic execution tool for\nkernel drivers that I'm currently developing.",
  "id": "CVE-2026-72483",
  "modified": "2026-08-18T03:30:56.870158569Z",
  "published": "2026-08-15T05:57:20.914Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/00dd025324b56d39d37e57a08f473dab3a660f30"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/02d03c61e8a7b016956acb48e8a2512d16d87517"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/08b1d4cab0230697bc74c63fc4e40170a7559c54"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3be5f24e8270ba53b3c814d13689bb8644c86237"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4da073d57176d8e1c2bca34febfbc81d2560c1a5"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/cff06b03b530ae1fe8a13e93a7848f2130e00fb4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d512bdefd241b98f4d7bcb5bab5614a86411fad4"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e5fa9d8f40746ec3447335c9642c03410f5fd3af"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/72xxx/CVE-2026-72483.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-72483"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "usb: host: max3421: Fix shift-out-of-bounds in max3421_hub_control()"
}