CVE-2026-90023 usb: gadget: f_mass_storage: fix null pointer dereference in fsg_common_set_num_buffers()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/gadget/function/f_mass_storage.c"
    ],
    "versions": [
      {
        "version": "fe5a6c48fd954489f51aab151d5dad9254c76419",
        "lessThan": "9e8dd2a7a8ccbb756771ad985b0ad3387ed3c957",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fe5a6c48fd954489f51aab151d5dad9254c76419",
        "lessThan": "b9b5b5df5b8dd3c1572ed267200276a44cc67d8e",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "fe5a6c48fd954489f51aab151d5dad9254c76419",
        "lessThan": "2c0f5ca48674a5b5f9fa4a9c3325aa48053af0bc",
        "status": "affected",
        "versionType": "git"
      }
    ]
  },
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "affected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/usb/gadget/function/f_mass_storage.c"
    ],
    "versions": [
      {
        "version": "4.8",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "4.8",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.52",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.2.5",
        "lessThanOrEqual": "7.2.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.3-rc2",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]