{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "dd767856a36e00b631d65ebc4bb81b19915532d6"
            },
            {
              "fixed": "b1a88633c36d2cbc3831382f3846754d344276fd"
            },
            {
              "fixed": "904a0e827d0d7189271a3a2eb648293809f25efc"
            },
            {
              "fixed": "675919e08ce266b8cac11fd9af29170e762a480f"
            },
            {
              "fixed": "60459c670329d586a58db5d8f811fa5accfe4862"
            },
            {
              "fixed": "ca3d68c3213475b53db6647e159dc73bd1af5ab1"
            },
            {
              "fixed": "4c030a0400ebfd2318361c923a88103b2c67c49f"
            },
            {
              "fixed": "c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8"
            },
            {
              "fixed": "6973a21ee73c5567f883813c8ef414774b45892f"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "3.2.0"
            },
            {
              "fixed": "5.10.271"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.11.0"
            },
            {
              "fixed": "5.15.222"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "5.16.0"
            },
            {
              "fixed": "6.1.189"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.2.0"
            },
            {
              "fixed": "6.6.158"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.112"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.54"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.2.8"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98241.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nipv6: xfrm: use full sockets in local error paths\n\nxfrm6_local_rxpmtu() and xfrm6_local_error() dereference skb-\u003esk as if it\nalways pointed at a full IPv6 socket.\n\nThat is not guaranteed. TCP SYN-ACK skbs can be owned by a\nTCP_NEW_SYN_RECV request_sock while the output path itself is driven by the\nfull listener. If rerouting selects an IPv6 XFRM tunnel route with a lower\nMTU, the local PMTU/error handling path can reach these callbacks with that\nmini-socket still attached to the skb.\n\nThe callbacks then miscast the request socket as a full inet/IPv6 socket and\ncan read beyond the request_sock allocation when they access inet_sock or\nipv6_pinfo state.\n\nResolve the owner with skb_to_full_sk() in both callbacks and bail out when\nno full socket is attached. This matches the surrounding XFRM IPv6 PMTU/error\nlogic, which already reasons about full sockets with skb_to_full_sk().",
  "id": "CVE-2026-98241",
  "modified": "2026-10-08T02:30:23.524810652Z",
  "published": "2026-10-06T08:45:11.954Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4c030a0400ebfd2318361c923a88103b2c67c49f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/60459c670329d586a58db5d8f811fa5accfe4862"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/675919e08ce266b8cac11fd9af29170e762a480f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6973a21ee73c5567f883813c8ef414774b45892f"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/904a0e827d0d7189271a3a2eb648293809f25efc"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b1a88633c36d2cbc3831382f3846754d344276fd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ca3d68c3213475b53db6647e159dc73bd1af5ab1"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/98xxx/CVE-2026-98241.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98241"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.9.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "ipv6: xfrm: use full sockets in local error paths"
}