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CVE-2026-100074

Full vulnerability record from the local CVENow database.

Description

In the Linux kernel, the following vulnerability has been resolved: bpf: Mark bpf_refcount field as unique BPF_REFCOUNT is not marked as a unique field, while it should be. Fix this oversight.

Severity
MEDIUM
CVSS score
5.5 (v3.1)
Vulnerability status
Undergoing Analysis
Source identifier
416baaa9-dc9f-4396-8d5f-8c081fb06d67
Published
2026-09-25 14:17:13.973000
Last modified
2026-10-21 13:18:26.940000
View original CVE JSON
{
  "id": "CVE-2026-100074",
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "published": "2026-09-25T14:17:13.973",
  "lastModified": "2026-10-21T13:18:26.940",
  "vulnStatus": "Undergoing Analysis",
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nbpf: Mark bpf_refcount field as unique\n\nBPF_REFCOUNT is not marked as a unique field, while it should be. Fix\nthis oversight."
    }
  ],
  "affected": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "affectedData": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "d54730b50bae1f3119bd686d551d66f0fcc387ca",
              "lessThan": "015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d54730b50bae1f3119bd686d551d66f0fcc387ca",
              "lessThan": "20b3c72c1b83054c568d2322a95e217fdc281bc3",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d54730b50bae1f3119bd686d551d66f0fcc387ca",
              "lessThan": "e42cede6f90177f4f92f80d3de18f628e61d2087",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d54730b50bae1f3119bd686d551d66f0fcc387ca",
              "lessThan": "641f814965d733936ca3618d4d5a12a8fa9be00e",
              "versionType": "git",
              "status": "affected"
            },
            {
              "version": "d54730b50bae1f3119bd686d551d66f0fcc387ca",
              "lessThan": "61e655391cb19c31f94ecd4354f624c81ce4cf75",
              "versionType": "git",
              "status": "affected"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "programFiles": [
            "kernel/bpf/btf.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "versions": [
            {
              "version": "6.4",
              "status": "affected"
            },
            {
              "version": "0",
              "lessThan": "6.4",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.6.160",
              "lessThanOrEqual": "6.6.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.12.114",
              "lessThanOrEqual": "6.12.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "6.18.52",
              "lessThanOrEqual": "6.18.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.2.6",
              "lessThanOrEqual": "7.2.*",
              "versionType": "semver",
              "status": "unaffected"
            },
            {
              "version": "7.3",
              "lessThanOrEqual": "*",
              "versionType": "original_commit_for_fix",
              "status": "unaffected"
            }
          ]
        }
      ]
    }
  ],
  "metrics": {
    "cvssMetricV31": [
      {
        "source": "[email protected]",
        "type": "Primary",
        "cvssData": {
          "version": "3.1",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
          "baseScore": 5.5,
          "baseSeverity": "MEDIUM",
          "attackVector": "LOCAL",
          "attackComplexity": "LOW",
          "privilegesRequired": "LOW",
          "userInteraction": "NONE",
          "scope": "UNCHANGED",
          "confidentialityImpact": "NONE",
          "integrityImpact": "NONE",
          "availabilityImpact": "HIGH"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 3.6
      }
    ]
  },
  "weaknesses": [
    {
      "source": "[email protected]",
      "type": "Primary",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ]
    }
  ],
  "configurations": [
    {
      "nodes": [
        {
          "operator": "OR",
          "negate": false,
          "cpeMatch": [
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.4",
              "versionEndExcluding": "6.18.52",
              "matchCriteriaId": "9C6C18F7-53D9-4D9A-8F89-C81548A57ADF"
            },
            {
              "vulnerable": true,
              "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
              "versionStartIncluding": "6.19",
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  ],
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/015f9fbcf3382c5eb563a157ee8cabb6fbfcfe5e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/20b3c72c1b83054c568d2322a95e217fdc281bc3",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    },
    {
      "url": "https://git.kernel.org/stable/c/61e655391cb19c31f94ecd4354f624c81ce4cf75",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
        "Patch"
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    },
    {
      "url": "https://git.kernel.org/stable/c/641f814965d733936ca3618d4d5a12a8fa9be00e",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    },
    {
      "url": "https://git.kernel.org/stable/c/e42cede6f90177f4f92f80d3de18f628e61d2087",
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "tags": [
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    }
  ]
}