{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "ed842faeb2bd49256f00485402f3113205f91d30"
            },
            {
              "fixed": "c68433fd291c9e88c00292095172c62d1997d662"
            },
            {
              "fixed": "4f397b950c916e9a1f8a4fce04ea0110206cad47"
            },
            {
              "fixed": "bd91ec85aa4c77d645bd2739fc56784157a88ca2"
            },
            {
              "fixed": "658261898130da620fc3d0fbb0523efb3366cb55"
            },
            {
              "fixed": "2ba4caba423ed94d63006eb1d2227b0332ab7fcd"
            },
            {
              "fixed": "9c55e41c73af5c4511070933b1bd25248521270c"
            },
            {
              "fixed": "3a30f6469b058574f49efde61cd6f5d79e576053"
            },
            {
              "fixed": "a01aee7cafc575bb82f5529e8734e7052f9b16ea"
            }
          ],
          "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-2026-31682.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: br_nd_send: linearize skb before parsing ND options\n\nbr_nd_send() parses neighbour discovery options from ns-\u003eopt[] and\nassumes that these options are in the linear part of request.\n\nIts callers only guarantee that the ICMPv6 header and target address\nare available, so the option area can still be non-linear. Parsing\nns-\u003eopt[] in that case can access data past the linear buffer.\n\nLinearize request before option parsing and derive ns from the linear\nnetwork header.",
  "id": "CVE-2026-31682",
  "modified": "2026-07-08T05:39:14.396244187Z",
  "published": "2026-04-25T08:46:59.106Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/2ba4caba423ed94d63006eb1d2227b0332ab7fcd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/3a30f6469b058574f49efde61cd6f5d79e576053"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4f397b950c916e9a1f8a4fce04ea0110206cad47"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/658261898130da620fc3d0fbb0523efb3366cb55"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/9c55e41c73af5c4511070933b1bd25248521270c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a01aee7cafc575bb82f5529e8734e7052f9b16ea"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/bd91ec85aa4c77d645bd2739fc56784157a88ca2"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c68433fd291c9e88c00292095172c62d1997d662"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/31xxx/CVE-2026-31682.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-31682"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "bridge: br_nd_send: linearize skb before parsing ND options"
}