{
  "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-2026-46120",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-46120",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-05-28T09:35:35.385Z",
    "updatedAt": "2026-10-19T19:36:51.221Z",
    "importedAt": "2026-10-24T01:58:14.884Z",
    "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_gre: Use cached t->net in ip6erspan_changelink().",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nip6_gre: Use cached t->net in ip6erspan_changelink().\n\nAfter commit 5e72ce3e3980 (\"net: ipv6: Use link netns in newlink() of\nrtnl_link_ops\"), ip6erspan_newlink() correctly resolves the per-netns\nip6gre hash via link_net. ip6erspan_changelink() was not converted in\nthat series and still uses dev_net(dev), which diverges from the\ndevice's creation netns after IFLA_NET_NS_FD migration.\n\nThis re-inserts the tunnel into the wrong per-netns hash. The\noriginal netns keeps a stale entry. When that netns is later\ndestroyed, ip6gre_exit_rtnl_net() walks the stale entry, producing a\nslab-use-after-free reported by KASAN, followed by a kernel BUG at\nnet/core/dev.c (LIST_POISON1) in unregister_netdevice_many_notify().\n\nReachable from an unprivileged user namespace (unshare --user\n--map-root-user --net).\n\nip6gre_changelink() earlier in the same file already uses the cached\nt->net; only ip6erspan_changelink() has the wrong shape.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "7bd0f2b162b426b343a114e1b329f0d8d14fdc6e"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "01b71ff2857d3598337de11e7840a8e3ff21553c"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0fcf6731706f73494245a9c0d64f93bebf95bb51"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "eca62bb0569de4d43a4dac06a2092a9d4ca1d702"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "311fdd26eb4443d43b909cc67a10f3a5fd1b21b2"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e70cfb40c3a99b232cd42c6a6a10f0d8e039dc82"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "cf7fc624329e76c6394653d12353e1d033adea91"
            },
            {
              "version": "2d665034f239412927b1e71329f20f001c92da09",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1d324c2f43f70c965f25c58cc3611c779adbe47e"
            },
            {
              "version": "c6d72628352c949629af619b77b042e0fb5245e7",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "4.16.12",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "4.17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.17"
            },
            {
              "version": "5.10.258",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.209",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.175",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.140",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.88",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.30",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.0.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.0.*"
            },
            {
              "version": "7.1",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}