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CVE-2023-54174 (GCVE-0-2023-54174)

Vulnerability from cvelistv5 – Published: 2025-12-30 12:08 – Updated: 2026-05-11 19:56
VLAI
Title
vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd
Summary
In the Linux kernel, the following vulnerability has been resolved: vfio: Fix NULL pointer dereference caused by uninitialized group->iommufd group->iommufd is not initialized for the iommufd_ctx_put() [20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000 [20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd] ... [20018.476483] Call Trace: [20018.479214] <TASK> [20018.481555] vfio_group_fops_unl_ioctl+0x506/0x690 [vfio] [20018.487586] __x64_sys_ioctl+0x6a/0xb0 [20018.491773] ? trace_hardirqs_on+0xc5/0xe0 [20018.496347] do_syscall_64+0x67/0x90 [20018.500340] entry_SYSCALL_64_after_hwframe+0x4b/0xb5
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 9eefba8002c27d65ab52a533fd0611b099b73591 , < 8f24eef598ce7cce0bbefe0ec642bcc031d0f528 (git)
Affected: 9eefba8002c27d65ab52a533fd0611b099b73591 , < d649c34cb916b015fdcb487e51409fcc5caeca8d (git)
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Linux Linux Affected: 6.2
Unaffected: 0 , < 6.2 (semver)
Unaffected: 6.2.3 , ≤ 6.2.* (semver)
Unaffected: 6.3 , ≤ * (original_commit_for_fix)
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{
  "containers": {
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      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/vfio/group.c"
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      "cpeApplicability": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                },
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                  "versionEndExcluding": "6.3",
                  "versionStartIncluding": "6.2",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nvfio: Fix NULL pointer dereference caused by uninitialized group-\u003eiommufd\n\ngroup-\u003eiommufd is not initialized for the iommufd_ctx_put()\n\n[20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000\n[20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd]\n...\n[20018.476483] Call Trace:\n[20018.479214]  \u003cTASK\u003e\n[20018.481555]  vfio_group_fops_unl_ioctl+0x506/0x690 [vfio]\n[20018.487586]  __x64_sys_ioctl+0x6a/0xb0\n[20018.491773]  ? trace_hardirqs_on+0xc5/0xe0\n[20018.496347]  do_syscall_64+0x67/0x90\n[20018.500340]  entry_SYSCALL_64_after_hwframe+0x4b/0xb5"
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-05-11T19:56:52.938Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/8f24eef598ce7cce0bbefe0ec642bcc031d0f528"
        },
        {
          "url": "https://git.kernel.org/stable/c/d649c34cb916b015fdcb487e51409fcc5caeca8d"
        }
      ],
      "title": "vfio: Fix NULL pointer dereference caused by uninitialized group-\u003eiommufd",
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2023-54174",
    "datePublished": "2025-12-30T12:08:47.527Z",
    "dateReserved": "2025-12-30T12:06:44.496Z",
    "dateUpdated": "2026-05-11T19:56:52.938Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2023-54174",
      "date": "2026-09-17",
      "epss": "0.00181",
      "percentile": "0.07908"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2023-54174\",\"sourceIdentifier\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"published\":\"2025-12-30T13:16:05.267\",\"lastModified\":\"2026-06-17T06:46:56.410\",\"vulnStatus\":\"Deferred\",\"cveTags\":[],\"descriptions\":[{\"lang\":\"en\",\"value\":\"In the Linux kernel, the following vulnerability has been resolved:\\n\\nvfio: Fix NULL pointer dereference caused by uninitialized group-\u003eiommufd\\n\\ngroup-\u003eiommufd is not initialized for the iommufd_ctx_put()\\n\\n[20018.331541] BUG: kernel NULL pointer dereference, address: 0000000000000000\\n[20018.377508] RIP: 0010:iommufd_ctx_put+0x5/0x10 [iommufd]\\n...\\n[20018.476483] Call Trace:\\n[20018.479214]  \u003cTASK\u003e\\n[20018.481555]  vfio_group_fops_unl_ioctl+0x506/0x690 [vfio]\\n[20018.487586]  __x64_sys_ioctl+0x6a/0xb0\\n[20018.491773]  ? trace_hardirqs_on+0xc5/0xe0\\n[20018.496347]  do_syscall_64+0x67/0x90\\n[20018.500340]  entry_SYSCALL_64_after_hwframe+0x4b/0xb5\"}],\"affected\":[{\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\",\"affectedData\":[{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"unaffected\",\"programFiles\":[\"drivers/vfio/group.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"9eefba8002c27d65ab52a533fd0611b099b73591\",\"lessThan\":\"8f24eef598ce7cce0bbefe0ec642bcc031d0f528\",\"versionType\":\"git\",\"status\":\"affected\"},{\"version\":\"9eefba8002c27d65ab52a533fd0611b099b73591\",\"lessThan\":\"d649c34cb916b015fdcb487e51409fcc5caeca8d\",\"versionType\":\"git\",\"status\":\"affected\"}]},{\"vendor\":\"Linux\",\"product\":\"Linux\",\"defaultStatus\":\"affected\",\"programFiles\":[\"drivers/vfio/group.c\"],\"repo\":\"https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git\",\"versions\":[{\"version\":\"6.2\",\"status\":\"affected\"},{\"version\":\"0\",\"lessThan\":\"6.2\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.2.3\",\"lessThanOrEqual\":\"6.2.*\",\"versionType\":\"semver\",\"status\":\"unaffected\"},{\"version\":\"6.3\",\"lessThanOrEqual\":\"*\",\"versionType\":\"original_commit_for_fix\",\"status\":\"unaffected\"}]}]}],\"metrics\":{},\"references\":[{\"url\":\"https://git.kernel.org/stable/c/8f24eef598ce7cce0bbefe0ec642bcc031d0f528\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"},{\"url\":\"https://git.kernel.org/stable/c/d649c34cb916b015fdcb487e51409fcc5caeca8d\",\"source\":\"416baaa9-dc9f-4396-8d5f-8c081fb06d67\"}]}}",
    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-21T19:14:10+00:00",
      "cve": "CVE-2023-54174",
      "id": "CVE-2023-54174",
      "initial_release_date": "2023-01-01T00:00:00+00:00",
      "product_status:known_affected": "108",
      "product_status:known_not_affected": "166",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: vfio: Fix NULL pointer dereference caused by uninitialized group-\u003eiommufd",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-54174.json",
      "version": "3"
    }
  }
}



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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
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  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


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