{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "include/net/gso.h",
            "net/core/gso.c",
            "net/ipv4/af_inet.c",
            "net/ipv6/ip6_offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "388604279da3d0698a151efa4fb6d852efa0de4a",
              "status": "affected",
              "version": "3347c960295583eee3fd58e5c539fb1972fbc005",
              "versionType": "git"
            },
            {
              "lessThan": "c949646c900e879afce47df1b607fa320eb63bf2",
              "status": "affected",
              "version": "3347c960295583eee3fd58e5c539fb1972fbc005",
              "versionType": "git"
            },
            {
              "lessThan": "006c8b834aed8b02bd8fb9fb05e9e7ead37d1763",
              "status": "affected",
              "version": "3347c960295583eee3fd58e5c539fb1972fbc005",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "include/net/gso.h",
            "net/core/gso.c",
            "net/ipv4/af_inet.c",
            "net/ipv6/ip6_offload.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "3.13"
            },
            {
              "lessThan": "3.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.60",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.3",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.60",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.2.10",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.3",
                  "versionStartIncluding": "3.13",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: gso: limit recursive IP-in-IP segmentation\n\nIP-in-IP GSO can re-enter inet_gso_segment() or ipv6_gso_segment()\nfor each nested IP header. encap_level tracks header bytes, not callback\ndepth, so a deep chain can exhaust the kernel stack. Making\ninet_gso_segment() stackable introduced unbounded IPv4 nesting; IPIP\nGSO/TSO later made the path reachable. The IPv6 stackable path was\nintroduced separately and uses the same guard.\n\nCount IPv4 and IPv6 GSO handler entries in skb_gso_cb, initialized once\nper top-level GSO operation and preserved across GRE/UDP context changes.\nUse the existing IP_TUNNEL_RECURSION_LIMIT for both handlers. The first\nfive entries pass, and the sixth returns -EINVAL before dispatching\nanother GSO callback."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-30T12:40:14.136Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/388604279da3d0698a151efa4fb6d852efa0de4a"
        },
        {
          "url": "https://git.kernel.org/stable/c/c949646c900e879afce47df1b607fa320eb63bf2"
        },
        {
          "url": "https://git.kernel.org/stable/c/006c8b834aed8b02bd8fb9fb05e9e7ead37d1763"
        }
      ],
      "title": "net: gso: limit recursive IP-in-IP segmentation",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98853",
    "datePublished": "2026-10-18T15:51:02.683Z",
    "dateReserved": "2026-09-25T10:25:14.376Z",
    "dateUpdated": "2026-10-30T12:40:14.136Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}