CVE-2026-46216 drm/xe/hdcp: Add NULL check for media_gt in intel_hdcp_gsc_check_status()

[
  {
    "product": "Linux",
    "vendor": "Linux",
    "defaultStatus": "unaffected",
    "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
    "programFiles": [
      "drivers/gpu/drm/xe/display/xe_hdcp_gsc.c"
    ],
    "versions": [
      {
        "version": "4af50beb4e0f9e6aed9cd53436c099f1dba826f1",
        "lessThan": "cad210d2851f3a7d9573bdfc02aa61d9287bbe8c",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4af50beb4e0f9e6aed9cd53436c099f1dba826f1",
        "lessThan": "814326e86e929b865020ff44f4576dbdfe3f7ff3",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4af50beb4e0f9e6aed9cd53436c099f1dba826f1",
        "lessThan": "d8ab4b47edf4578dbfbe5e95817107a514fa34cc",
        "status": "affected",
        "versionType": "git"
      },
      {
        "version": "4af50beb4e0f9e6aed9cd53436c099f1dba826f1",
        "lessThan": "60a1e131a811b68703da58fd805ab359b704ab03",
        "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/gpu/drm/xe/display/xe_hdcp_gsc.c"
    ],
    "versions": [
      {
        "version": "6.10",
        "status": "affected"
      },
      {
        "version": "0",
        "lessThan": "6.10",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.12.92",
        "lessThanOrEqual": "6.12.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "6.18.34",
        "lessThanOrEqual": "6.18.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.0.9",
        "lessThanOrEqual": "7.0.*",
        "status": "unaffected",
        "versionType": "semver"
      },
      {
        "version": "7.1",
        "lessThanOrEqual": "*",
        "status": "unaffected",
        "versionType": "original_commit_for_fix"
      }
    ]
  }
]