{
  "id": "CVE-2026-98241",
  "url": "https://spydr.io/cve/CVE-2026-98241",
  "published": "2026-10-06T09:18:12.090Z",
  "modified": "2026-10-06T09:18:12.090Z",
  "score": null,
  "severity": null,
  "cvss_version": null,
  "vector": null,
  "score_source": null,
  "epss": 0.00184,
  "epss_percentile": 0.07302,
  "exploited": false,
  "kev": null,
  "ssvc_exploitation": null,
  "vendors": [
    "Linux"
  ],
  "products": [
    "Linux"
  ],
  "cwes": [],
  "description": "In the Linux kernel, the following vulnerability has been resolved: ipv6: xfrm: use full sockets in local error paths xfrm6_local_rxpmtu() and xfrm6_local_error() dereference skb->sk as if it always pointed at a full IPv6 socket. That is not guaranteed. TCP SYN-ACK skbs can be owned by a TCP_NEW_SYN_RECV request_sock while the output path itself is driven by the full listener. If rerouting selects an IPv6 XFRM tunnel route with a lower MTU, the local PMTU/error handling path can reach these callbacks with that mini-socket still attached to the skb. The callbacks then miscast the request socket as a full inet/IPv6 socket and can read beyond the request_sock allocation when they access inet_sock or ipv6_pinfo state. Resolve the owner with skb_to_full_sk() in both callbacks and bail out when no full socket is attached. This matches the surrounding XFRM IPv6 PMTU/error logic, which already reasons about full sockets with skb_to_full_sk().",
  "status": "Received",
  "score_type": null,
  "scores": {
    "cvss_v40": null,
    "cvss_v31": null,
    "cvss_v30": null
  },
  "references": [
    {
      "url": "https://git.kernel.org/stable/c/4c030a0400ebfd2318361c923a88103b2c67c49f",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/60459c670329d586a58db5d8f811fa5accfe4862",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/675919e08ce266b8cac11fd9af29170e762a480f",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/6973a21ee73c5567f883813c8ef414774b45892f",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/904a0e827d0d7189271a3a2eb648293809f25efc",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/b1a88633c36d2cbc3831382f3846754d344276fd",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/c21f3f7fbfeda7c5794f606cb0ffcc2d9001eef8",
      "tags": []
    },
    {
      "url": "https://git.kernel.org/stable/c/ca3d68c3213475b53db6647e159dc73bd1af5ab1",
      "tags": []
    }
  ],
  "nvd_url": "https://nvd.nist.gov/vuln/detail/CVE-2026-98241",
  "covered_in": [],
  "attribution": [
    {
      "source": "NVD",
      "url": "https://nvd.nist.gov",
      "notice": "This product uses data from the NVD API but is not endorsed or certified by the NVD."
    },
    {
      "source": "CISA KEV",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "notice": "Known exploited vulnerabilities from the CISA KEV catalog."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss",
      "notice": "Exploit prediction scores from FIRST EPSS."
    }
  ]
}