{
  "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-2026-74701",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74701",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-22T15:33:01.585Z",
    "updatedAt": "2026-10-16T19:16:10.294Z",
    "importedAt": "2026-10-24T01:58:30.346Z",
    "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": "net/openvswitch: check Ethernet header length in key_extract()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/openvswitch: check Ethernet header length in key_extract()\n\nWhen a packet arrives on an ARPHRD_NONE device (e.g. TUN),\novs_flow_key_extract() trusts the user-provided skb->protocol field: if\nit is ETH_P_TEB, the packet is classified as MAC_PROTO_ETHERNET and\nkey_extract() is called without ensuring the skb has ETH_HLEN (14) bytes\nof linear data. key_extract() unconditionally pulls 2 * ETH_ALEN bytes\nfor MAC addresses and parse_ethertype() pulls 2 more, either of which\ntriggers a kernel BUG in __skb_pull() when the linear area is too small.\n\n  kernel BUG at include/linux/skbuff.h:2848!\n  RIP: 0010:key_extract+0xa7e/0xd90 net/openvswitch/flow.c:933\n  ovs_flow_key_extract+0x419/0xa70\n  ovs_vport_receive+0x222/0x390\n  netdev_frame_hook+0x3e0/0x630\n  tun_get_user+0x2d0c/0x38e0\n\nFixed by calling check_header() in key_extract() before accessing the\nEthernet header.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e85278afd4890dd190ba3c7a1b1a712b801c9fe1"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "81f9b09f0ea3ba9ab966dd17e9f32625a14555e9"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "831471718f6e19aed1a330b03b53190a90e06466"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d8bea341b183190ce6c055ab0e64ab78eb9a7290"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0b60b55652ba772b173dddc63f3851e1d2dd5927"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a8139285c8925efe59af28a9169bb2fda91bff15"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9b8cfbb58b85bfa7a78fac47fdc77396cd01f699"
            },
            {
              "version": "217ac77a3c2524d999730b2a80b61fcc2d0f734a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf6f8b29befb92173659bcef6a441d274947bfae"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.10",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.10"
            },
            {
              "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": "6.6.152",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.104",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.45",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.9",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}