« Back to list

CVE-2023-54034

Status: DeferredUnscored—

In the Linux kernel, the following vulnerability has been resolved:

iommufd: Make sure to zero vfio_iommu_type1_info before copying to user

Missed a zero initialization here. Most of the struct is filled with a copy_from_user(), however minsz for that copy is smaller than the actual struct by 8 bytes, thus we don't fill the padding.

CVSS

NVD hasn't assigned a CVSS score to this CVE (common since the April 2026 policy change).

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

⚠ AI-inferred from the description — NVD hasn't analyzed this CVE yet, these aren't verified CPEs.

Linux — Linux KernelAI

References

Raw JSON (NVD)

Show
{
  "id": "CVE-2023-54034",
  "cveTags": [],
  "metrics": {},
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "d624d6652a65ad4f47a58b8651a1ec1163bb81d3",
              "lessThan": "7adcec686e4d699c169d34c722132b2bce5232cb",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "d624d6652a65ad4f47a58b8651a1ec1163bb81d3",
              "lessThan": "b3551ead616318ea155558cdbe7e91495b8d9b33",
              "versionType": "git"
            }
          ],
          "programFiles": [
            "drivers/iommu/iommufd/vfio_compat.c"
          ],
          "defaultStatus": "unaffected"
        },
        {
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "product": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.2"
            },
            {
              "status": "unaffected",
              "version": "0",
              "lessThan": "6.2",
              "versionType": "semver"
            },
            {
              "status": "unaffected",
              "version": "6.2.3",
              "versionType": "semver",
              "lessThanOrEqual": "6.2.*"
            },
            {
              "status": "unaffected",
              "version": "6.3",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ],
          "programFiles": [
            "drivers/iommu/iommufd/vfio_compat.c"
          ],
          "defaultStatus": "affected"
        }
      ]
    }
  ],
  "published": "2025-12-24T11:15:56.397",
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/7adcec686e4d699c169d34c722132b2bce5232cb",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/b3551ead616318ea155558cdbe7e91495b8d9b33",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "vulnStatus": "Deferred",
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\niommufd: Make sure to zero vfio_iommu_type1_info before copying to user\n\nMissed a zero initialization here. Most of the struct is filled with\na copy_from_user(), however minsz for that copy is smaller than the\nactual struct by 8 bytes, thus we don't fill the padding."
    }
  ],
  "lastModified": "2026-06-17T06:46:34.683",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
}