{
  "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-2026-74597",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74597",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-22T15:31:47.120Z",
    "updatedAt": "2026-10-16T19:06:00.036Z",
    "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": "ip6_tunnel: clear skb2->cb[] in ip6ip6_err()",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6_tunnel: clear skb2->cb[] in ip6ip6_err()\n\nip6ip6_err() clones an outer IPv6 ICMP error skb, pulls it to the\nquoted inner IPv6 packet, and then passes the clone to icmpv6_send().\nThe clone still carries the outer packet's inet6_skb_parm in skb->cb.\n\nIf the outer packet had a Home Address Option, IP6CB(skb2)->dsthao\nremains non-zero after skb_pull(). icmpv6_send() later calls\nmip6_addr_swap(), which uses that stale dsthao offset against the quoted\ninner packet. A malformed inner destination-options header can then make\nthe HAO lookup and address swap run past the end of the quoted packet\nand corrupt skb_shared_info.\n\nClear skb2->cb[] before pulling the quoted inner IPv6 packet so the\nreply path does not reuse metadata left by the outer IPv6 stack.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "44fe898df302e91c5ee5acbc71ffa74e78e6c183"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0dadb0620ab65949a8bc2439dd28ea3c942fe87d"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b6816536a2990c0db44a26130a03e40b441e829b"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "64e41736a26f37ab6215bc2e6df125df05aceb08"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "484134e1eb07d700a73b1e4bbf3fb503e299be60"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4eb15c465337b18f44716c499cd6ad63eee0ad54"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fbf40faa0414b753212494ad197542002e66ed9e"
            },
            {
              "version": "e490d1d85cf5e191791979e5f260d32eb4f703a8",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f803c086399da277b5d0ff36a107d0f162751800"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "2.6.22",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "2.6.22"
            },
            {
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}