{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ed842faeb2bd49256f00485402f3113205f91d30"
            },
            {
              "fixed": "82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"
            },
            {
              "fixed": "259466f76f5a2148aff11134e68f4b4c6d52725b"
            },
            {
              "fixed": "ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"
            },
            {
              "fixed": "e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"
            },
            {
              "fixed": "c49b9256bbacb6a135654aebd12e4c0e87166b7c"
            },
            {
              "fixed": "837392a38445729c22e03d3abcf33f07763efd85"
            },
            {
              "fixed": "e71303a9190496136e240c4f2872b7b0b16027a7"
            },
            {
              "fixed": "850837965af15707fd3142c1cf3c5bfaf022299b"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "4.15.0"
            },
            {
              "fixed": "5.10.253"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.203"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.168"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.134"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.81"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.22"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "6.19.12"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31752.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: validate ND option lengths\n\nbr_nd_send() walks ND options according to option-provided lengths.\nA malformed option can make the parser advance beyond the computed\noption span or use a too-short source LLADDR option payload.\n\nValidate option lengths against the remaining NS option area before\nadvancing, and only read source LLADDR when the option is large enough\nfor an Ethernet address.",
  "id": "CVE-2026-31752",
  "modified": "2026-07-08T05:36:30.026294031Z",
  "published": "2026-05-01T14:14:44.298Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/259466f76f5a2148aff11134e68f4b4c6d52725b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/82a42eceec7c6bdb0e0da94c0542a173b7ea57f2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/837392a38445729c22e03d3abcf33f07763efd85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/850837965af15707fd3142c1cf3c5bfaf022299b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c49b9256bbacb6a135654aebd12e4c0e87166b7c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e0bfd6d4dc77ab345b6c65eef0cfe9b2f69085aa"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/e71303a9190496136e240c4f2872b7b0b16027a7"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ee02d8991fd7bd86ed6ebd0deb4aab53feb0e43a"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31752.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31752"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "summary": "bridge: br_nd_send: validate ND option lengths"
}