{
  "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-2026-74480",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-74480",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-08-15T12:27:13.803Z",
    "updatedAt": "2026-10-16T19:05:48.808Z",
    "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: bridge: stop fast-leave after deleting a port group",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: bridge: stop fast-leave after deleting a port group\n\nbr_multicast_leave_group() iterates mp->ports with pp = &p->next in\nits fast-leave path. After br_multicast_del_pg() removes p,\ncontinuing the loop advances pp through the deleted entry.\n\nIf multicast-to-unicast was enabled, the bridge can hold multiple port\ngroups for the same port and group with different source MAC\naddresses. Once multicast-to-unicast is disabled,\nbr_port_group_equal() matches those entries by port only. A fast leave\ncan then delete one entry and continue from its stale next pointer,\nleaving mp->ports pointing at a deleted port group.\n\nFast leave only needs to remove one matching port group. Break after\nbr_multicast_del_pg() so the loop stops before dereferencing the\nremoved entry.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d6c32e2e25a9a06ba021030e26b6d602a277eb72"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "482bcb85139addb4e8ac8ed10baeda3e0aad4031"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "1a109cc9890d017c41d77e6c82da739579c49f0b"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "159ad90cb929c033308bb39a2c5f8fbf393b77aa"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4695430e8132420bf8de94da3eb36a6cf35fde6b"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0309ebbc570000ea0df11c06b69798e5860c5f6f"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4c57056ca6aace2e9f94ae9298bf49ef6b0c95e4"
            },
            {
              "version": "6db6f0eae6052b70885562e1733896647ec1d807",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a39789f211b8a4125f0c70e05b30cf715f4f187d"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "4.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "4.11"
            },
            {
              "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": "6.6.151",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.103",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.44",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.1.8",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.1.*"
            },
            {
              "version": "7.2",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}