cve-2026-64076

{
  "cvss": 7.8,
  "datePublished": "2026-07-19T16:17:48.213",
  "dateUpdated": "2026-09-03T14:45:20.210",
  "description": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bridge: eb_tables: close module init race\n\nsashiko reports for unrelated patch:\n Does the core ebtables initialization in ebtables.c suffer from a similar race?\n Once nf_register_sockopt() completes, the sockopts are exposed globally.\n\nsockopt has to be registered last, just like in ip/ip6/arptables.",
  "id": "CVE-2026-64076",
  "raw": {
    "affected": [
      {
        "affectedData": [
          {
            "defaultStatus": "unaffected",
            "product": "Linux",
            "programFiles": [
              "net/bridge/netfilter/ebtables.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "lessThan": "c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4",
                "status": "affected",
                "version": "5b53951cfc85329d29df9d07b1e905f4563546a5",
                "versionType": "git"
              },
              {
                "lessThan": "02d999dc69b3918dba2414932b5d95f1f75c76cb",
                "status": "affected",
                "version": "5b53951cfc85329d29df9d07b1e905f4563546a5",
                "versionType": "git"
              },
              {
                "lessThan": "27414ff1b287ea9a2a11675149ec28e05539f3cc",
                "status": "affected",
                "version": "5b53951cfc85329d29df9d07b1e905f4563546a5",
                "versionType": "git"
              }
            ]
          },
          {
            "defaultStatus": "affected",
            "product": "Linux",
            "programFiles": [
              "net/bridge/netfilter/ebtables.c"
            ],
            "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
            "vendor": "Linux",
            "versions": [
              {
                "status": "affected",
                "version": "5.13"
              },
              {
                "lessThan": "5.13",
                "status": "unaffected",
                "version": "0",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "6.18.*",
                "status": "unaffected",
                "version": "6.18.34",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "7.0.*",
                "status": "unaffected",
                "version": "7.0.11",
                "versionType": "semver"
              },
              {
                "lessThanOrEqual": "*",
                "status": "unaffected",
                "version": "7.1",
                "versionType": "original_commit_for_fix"
              }
            ]
          }
        ],
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
      }
    ],
    "configurations": [
      {
        "nodes": [
          {
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                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                "matchCriteriaId": "B6507A85-8906-4848-BEE8-90E7A1FAF9B0",
                "versionEndExcluding": "6.18.34",
                "versionStartIncluding": "5.13",
                "vulnerable": true
              },
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                "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                "versionStartIncluding": "6.19",
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            ],
            "negate": false,
            "operator": "OR"
          }
        ]
      }
    ],
    "cveTags": [],
    "descriptions": [
      {
        "lang": "en",
        "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bridge: eb_tables: close module init race\n\nsashiko reports for unrelated patch:\n Does the core ebtables initialization in ebtables.c suffer from a similar race?\n Once nf_register_sockopt() completes, the sockopts are exposed globally.\n\nsockopt has to be registered last, just like in ip/ip6/arptables."
      }
    ],
    "id": "CVE-2026-64076",
    "lastModified": "2026-09-03T14:45:20.210",
    "metrics": {
      "cvssMetricV31": [
        {
          "cvssData": {
            "attackComplexity": "LOW",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
            "version": "3.1"
          },
          "exploitabilityScore": 1.8,
          "impactScore": 5.9,
          "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
          "type": "Secondary"
        }
      ]
    },
    "published": "2026-07-19T16:17:48.213",
    "references": [
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/02d999dc69b3918dba2414932b5d95f1f75c76cb"
      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
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      },
      {
        "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "tags": [
          "Patch"
        ],
        "url": "https://git.kernel.org/stable/c/c647e2a21bbbaceda6cdb8a44a56f44d231dc4b4"
      }
    ],
    "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "vulnStatus": "Analyzed",
    "weaknesses": [
      {
        "description": [
          {
            "lang": "en",
            "value": "NVD-CWE-noinfo"
          }
        ],
        "source": "nvd@nist.gov",
        "type": "Primary"
      }
    ]
  },
  "severity": "HIGH",
  "source": "nvd",
  "title": "In the Linux kernel, the following vulnerability has been resolved:\n\nnetfilter: bridge: eb_tables: close module init ..."
}