{
  "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-2026-64537",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-64537",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-07-27T20:10:32.210Z",
    "updatedAt": "2026-08-17T04:57:13.368Z",
    "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": "bridge: cfm: reject invalid CCM interval at configuration time",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nbridge: cfm: reject invalid CCM interval at configuration time\n\nccm_tx_work_expired() re-arms itself via queue_delayed_work() using\nthe configured exp_interval converted by interval_to_us(). When\nexp_interval is BR_CFM_CCM_INTERVAL_NONE or out of range,\ninterval_to_us() returns 0, causing the worker to fire immediately in\na tight loop that allocates skbs until OOM.\n\nFix this by validating exp_interval at configuration time:\n\n - Constrain IFLA_BRIDGE_CFM_CC_CONFIG_EXP_INTERVAL to the valid range\n   [BR_CFM_CCM_INTERVAL_3_3_MS, BR_CFM_CCM_INTERVAL_10_MIN] in the\n   netlink policy so userspace cannot set an invalid value.\n\n - Reject starting CCM TX in br_cfm_cc_ccm_tx() when exp_interval has\n   not yet been configured (defaults to 0 from kzalloc).",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "2870056a78961e0fecd652362ee9d3fcfd24a8a6"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f0f5eb59a97ece0d85de8cfa95dc18c609302a8b"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "53788b134519e995699ea3721969c96a08d64575"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "b42aeb58317f12024734759ff745856b53948873"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a090880c1f544589427e5b7050c40fb211ccecb4"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "865643640b5b5c4579b32d7a55ac9ad648362eaa"
            },
            {
              "version": "2be665c3940d367e0a2a8128eb4985ce323f99a3",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3e02edd8322b31b8e6517faa6ba053bf29d1e26"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "5.11",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "5.11"
            },
            {
              "version": "5.15.212",
              "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": "*"
            }
          ]
        }
      ]
    }
  }
}