{
  "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-2026-72019",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-72019",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T05:51:46.014Z",
    "updatedAt": "2026-10-19T21:19:23.088Z",
    "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": "macsec: don't read an unset MAC header in macsec_encrypt()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nmacsec: don't read an unset MAC header in macsec_encrypt()\n\nmacsec_encrypt() reads the Ethernet header via eth_hdr(skb)\n(skb->head + skb->mac_header) to memmove() the 12 source/destination MAC\nbytes forward and make room for the SecTAG.\n\nOn the AF_PACKET SOCK_RAW + PACKET_QDISC_BYPASS transmit path the skb\nreaches the macsec ndo_start_xmit() with the MAC header unset, so\neth_hdr(skb) resolves to skb->head + (u16)~0 and the read is out of\nbounds: a 12-byte heap over-read that is also emitted on the wire as the\nframe's outer source/destination MAC. KASAN reports a slab-out-of-bounds\nread in macsec_start_xmit() on 6.0; on current mainline a CONFIG_DEBUG_NET\nbuild flags it as an unset mac header in skb_mac_header().\n\nOn the TX path the L2 header is at skb->data, so use skb_eth_hdr(), added\nby commit 96cc4b69581d (\"macvlan: do not assume mac_header is set in\nmacvlan_broadcast()\") for exactly this purpose.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b6cec6187b8632423cd99a94fd5e5ba165fa2a33"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3adea1b1c04b57e08a5c12a1f42483760581ce61"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "dc9ffa1905e72f026d080880a2e4cfc42aa91000"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f21fa533a3ed15ada74106aac4b9ddd078fc6b7a"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e17a42199824973cd8212e95b21ffadf4114a21b"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2cf10d042562283ff4ae97c02d0993d4f1b5ea29"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "c39087ad0b97fc11a3b058dfc8db9fd370762cb9"
            },
            {
              "version": "c09440f7dcb304002dfced8c0fea289eb25f2da0",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f5089008f90c0a7c5520dff3934e0af00adf322d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.6",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.6"
            },
            {
              "version": "5.10.265",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.216",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.178",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.145",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.97",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.40",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.5",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}