drm/i915/gvt: fix gvt debugfs destroy

{
  "id": "510b8ee8efb033ce9b5f69d36839e6b76f0ee69454db8f5d76ebea6b4c7fa628",
  "url": "https://osv.dev/vulnerability/CVE-2023-54098",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "drm/i915/gvt: fix gvt debugfs destroy",
    "summary": "In the Linux kernel, the following vulnerability has been resolved: drm/i915/gvt: fix gvt debugfs destroy When gvt debug fs is destroyed, need to have a sane check if drm minor's debugfs root is still available or not, otherwise in case like device remove through unbinding, drm minor's debugfs directory has already been removed, then intel_gvt_debugfs_clean() would act upon dangling pointer like below oops. i915 0000:00:02.0: Direct firmware load for i915/gvt/vid_0x8086_did_0x1926_rid_0x0a.golden_hw_state failed with error -2 i915 0000:00:02.0: MDEV: Registered Console: switching to colour dummy device 80x25 i915 0000:00:02.0: MDEV: Unregistering BUG: kernel NULL pointer dereference, address: 00000000000000a0 PGD 0 P4D 0 Oops: 0002 [#1] PREEMPT SMP PTI CPU: 2 PID: 2486 Comm: gfx-unbind.sh Tainted: G I 6.1.0-rc8+ #15 Hardware name: Dell Inc. XPS 13 9350/0JXC1H, BIOS 1.13.0 02/10/2020 RIP: 0010:down_write+0x1f/0x90 Code: 1d ff ff 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 53 48 89 fb e8 62 c0 ff ff bf 01 00 00 00 e8 28 5e 31 ff 31 c0 ba 01 00 00 00 48 0f b1 13 75 33 65 48 8b 04 25 c0 bd 01 00 48 89 43 08 bf 01 RSP: 0018:ffff9eb3036ffcc8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 00000000000000a0 RCX: ffffff8100000000 RDX: 0000000000000001 RSI: 0000000000000064 RDI: ffffffffa48787a8 RBP: ffff9eb3036ffd30 R08: ffffeb1fc45a0608 R09: ffffeb1fc45a05c0 R10: 0000000000000002 R11: 0000000000000000 R12: 0000000000000000 R13: ffff91acc33fa328 R14: ffff91acc033f080 R15: ffff91acced533e0 FS: ",
    "evidence": "osv:CVE-2023-54098",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "5.10.163",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "5.15.87",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.0.19",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.1.5",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "high",
    "structured": {
      "id": "CVE-2023-54098",
      "aliases": [
        "CVE-2023-54098"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H"
        }
      ],
      "affected": [
        {
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              "type": "GIT",
              "events": [
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                  "fixed": "bb7c7b2c89d2feb347b6f9bffc1c75987adb1048"
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                  "fixed": "c4b850d1f448a901fbf4f7f36dec38c84009b489"
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          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54098.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "4.16.0"
                },
                {
                  "fixed": "5.10.163"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
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                  "introduced": "5.11.0"
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                {
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                {
                  "fixed": "6.0.19"
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            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.1.0"
                },
                {
                  "fixed": "6.1.5"
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              ]
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          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-54098.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:30.084777914Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/ae9a61511736cc71a99f01e8b7b90f6fb6128ed8",
        "https://git.kernel.org/stable/c/b85c8536fda3d1ed07c6d87a661ffe18d6eb214b",
        "https://git.kernel.org/stable/c/bb7c7b2c89d2feb347b6f9bffc1c75987adb1048",
        "https://git.kernel.org/stable/c/c4b850d1f448a901fbf4f7f36dec38c84009b489",
        "https://git.kernel.org/stable/c/fe340500baf84b6531c9fc508b167525b9bf6446",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54098.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-54098",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/54xxx/CVE-2023-54098.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-54098",
        "evidence": "/id"
      }
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    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 496914,
  "published_at": "2025-12-24T13:06:25.197+00:00"
}