{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2"
            },
            {
              "fixed": "8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1"
            },
            {
              "fixed": "e8219accce2f6d3502ed71f5b5e854ecf27249a6"
            },
            {
              "fixed": "87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c"
            },
            {
              "fixed": "162178ca83c3de986900385a0477eb539f8e1a7e"
            },
            {
              "fixed": "ebd916fdfefaacbc0e577f7037ec96b31a105e5f"
            },
            {
              "fixed": "c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb"
            },
            {
              "fixed": "64ec019bf9a8b12f53b9f2777d65aadb730b5a84"
            },
            {
              "fixed": "dd0eed9e165b1a6292f49e622e3dd0b7d99b106d"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "2.6.12"
            },
            {
              "fixed": "5.10.270"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.221"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.188"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.157"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.110"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.51"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.5"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90020.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nUSB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()\n\ngadget_dev_ioctl() reads dev-\u003egadget before acquiring dev-\u003elock, but\ndev-\u003estate is checked after acquiring the lock. Therefore a concurrent\nbind can change the device state between these operations, which can\nleave ioctl with a stale NULL gadget pointer and causing a NULL pointer\ndereference at gadget-\u003eops-\u003eioctl.\n\nRead dev-\u003egadget while holding dev-\u003elock so that the gadget pointer\nand device state are sampled consistently.",
  "id": "CVE-2026-90020",
  "modified": "2026-09-19T03:31:04.309302461Z",
  "published": "2026-09-16T10:33:24.866Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/162178ca83c3de986900385a0477eb539f8e1a7e"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/64ec019bf9a8b12f53b9f2777d65aadb730b5a84"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/87cbf9410b12f5c2d659bb01e8ecf6517cb9f28c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8be30959be31b4205e3bdd2e2a6221f3a2ee7ea1"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c29a83c1ff3f06d5751f6d365b606c9f81ccc4cb"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/dd0eed9e165b1a6292f49e622e3dd0b7d99b106d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e8219accce2f6d3502ed71f5b5e854ecf27249a6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ebd916fdfefaacbc0e577f7037ec96b31a105e5f"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/90xxx/CVE-2026-90020.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-90020"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "summary": "USB: gadget: fix NULL pointer dereference in gadget_dev_ioctl()"
}