CVE-2026-98417 (GCVE-0-2026-98417)
Vulnerability from cvelistv5
Published
2026-10-14 13:27
Modified
2026-10-19 09:19
Severity ?
Summary
In the Linux kernel, the following vulnerability has been resolved: net: xfrm: reject unrepresentable espintcp transport headers ESP-in-TCP can hand xfrm packets whose transport header offset no longer fits after the stream parser trims the TCP envelope. The plain transport header reset truncates that offset and triggers the skb warning path. Use the careful transport-header helper and drop the skb through the existing XFRM error path when the offset cannot be represented.
References
Impacted products
Vendor Product Version
Linux Linux Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
Version: e27cca96cd68fa2c6814c90f9a1cfd36bb68c593
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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/xfrm/espintcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
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              "versionType": "git"
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        },
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          "product": "Linux",
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            "net/xfrm/espintcp.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.6"
            },
            {
              "lessThan": "5.6",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.271",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.222",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.189",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.158",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.112",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.54",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.2.*",
              "status": "unaffected",
              "version": "7.2.8",
              "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": "5.10.271",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
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                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "5.15.222",
                  "versionStartIncluding": "5.6",
                  "vulnerable": true
                },
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "vulnerable": true
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                {
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                  "versionEndExcluding": "6.6.158",
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                },
                {
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                {
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                },
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                },
                {
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                  "versionEndExcluding": "7.3",
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                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: xfrm: reject unrepresentable espintcp transport headers\n\nESP-in-TCP can hand xfrm packets whose transport header offset no longer\nfits after the stream parser trims the TCP envelope. The plain transport\nheader reset truncates that offset and triggers the skb warning path.\n\nUse the careful transport-header helper and drop the skb through the\nexisting XFRM error path when the offset cannot be represented."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-10-19T09:19:11.040Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/d37a5b87577c4b4c1a1dcb000a9dff1df2cf886b"
        },
        {
          "url": "https://git.kernel.org/stable/c/6c29681207bc213188afa603dff2d55e7178a341"
        },
        {
          "url": "https://git.kernel.org/stable/c/4a8243fd2e21980fa3fd10c0610e9155057cebd3"
        },
        {
          "url": "https://git.kernel.org/stable/c/b2b84e73e0386ad0b4f9b8d3afde343e761f5275"
        },
        {
          "url": "https://git.kernel.org/stable/c/327b2a457dd7d5445f7395f371f3c65de79bd5ce"
        },
        {
          "url": "https://git.kernel.org/stable/c/cce630c751279e974fa0bb574d80575e0cc7e8f3"
        },
        {
          "url": "https://git.kernel.org/stable/c/206f396f46149dc8bc4dfd2b54b9879ba3ee1d7d"
        },
        {
          "url": "https://git.kernel.org/stable/c/96f01b53c2d05e003b040892256de54a586e8529"
        }
      ],
      "title": "net: xfrm: reject unrepresentable espintcp transport headers",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-98417",
    "datePublished": "2026-10-14T13:27:47.816Z",
    "dateReserved": "2026-09-25T10:25:14.347Z",
    "dateUpdated": "2026-10-19T09:19:11.040Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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