{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2026-68123",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-68123",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-10T11:58:43.727Z",
    "updatedAt": "2026-10-19T20:58:51.936Z",
    "importedAt": "2026-10-24T01:58:25.636Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "openvswitch: fix GSO userspace truncation underflow",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nopenvswitch: fix GSO userspace truncation underflow\n\nOVS_ACTION_ATTR_TRUNC currently stores a delta from the original skb\nlength in OVS_CB(skb)->cutlen. When a later userspace action segments a\nGSO skb, queue_gso_packets() reuses that delta for each smaller segment.\nA segment can then reach queue_userspace_packet() with cutlen greater\nthan skb->len, underflowing the length passed to skb_zerocopy().\n\nStore the maximum preserved length instead and bound each consumer\nagainst the current skb length. Use U32_MAX as the no-truncation\nsentinel so the value remains valid if skb geometry changes before a\nconsumer handles it.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "50a6a85f3d6b1d22d8436848606cdef5d2c490b4"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2623c48cc3a8da9a1886fd8f65c0e348f4406fd6"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e211b081901ffca76674082c73eeaed53524c369"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a16eaaf7c0b0ccdef6166707d90ffbc6eebf6855"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fbfa3ad2ad6f3a5624aba5211c46290fb98cc9dc"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "100a23b1613e9218e0af654ef102352c713f0263"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "ea85dbcbe8d4056ecb54352f97743d138ea4c407"
            },
            {
              "version": "f2a4d086ed4c588d32fe9b7aa67fead7280e7bf1",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4032f8ed10fcb84d41c508dfb04be96589f78dfe"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.8",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.8"
            },
            {
              "version": "5.10.265",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.183",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.148",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.101",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.42",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.6",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}