{
  "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-2026-98012",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2026-98012",
    "idYear": 2026,
    "status": "PUBLISHED",
    "publishedAt": "2026-09-25T10:23:35.934Z",
    "updatedAt": "2026-10-19T09:12:17.681Z",
    "importedAt": "2026-10-24T01:58:41.756Z",
    "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/sched: sfq: clamp quantum in change path",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sfq: clamp quantum in change path\n\nsfq_change() accepts any non-negative quantum (only rejects\n(int)ctl->quantum < 0). With a crafted size table qdisc_pkt_len reaches\n~2 GiB, so quantum=1 makes the deficit-refill loop spin ~2^31 times\nunder the qdisc lock (a soft lockup / denial of service).\n\nAdd max(256U, ...) matching fq_codel_change(). Reject quantum > 1<<20\nwith -EINVAL, matching fq_codel_change() and the init clamp.\n\nConditions to recreate the bug:\n  CONFIG_NET_SCH_SFQ=y. Requires CAP_NET_ADMIN (namespace-local via\n  unshare -Urn suffices).\n\n  tc qdisc add dev dummy0 root sfq\n  tc qdisc change dev dummy0 root sfq quantum 1 stab data 32768 size_log 15 cell_log 0",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "4919649699c5f4dbae08b8e2ed536fc9d6c3c2aa",
              "status": "affected",
              "versionType": "git",
              "lessThan": "4117c528b2de5fdc3e4a7e3626815b616a635cdc"
            },
            {
              "version": "548cf048b426729a7a1fa6acd1271c010c9a7380",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f82fa6f10d4a69322cad0f7a4aa523ce6292a5a0"
            },
            {
              "version": "c49ac48fac51a6a54efd5963954d02bacf075085",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0692ce5a528df450d64e9f819054177e9d91076f"
            },
            {
              "version": "58ae7465f0e7113d45aa88a66bf2d203c71c195e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e4192bcf83aaab02129644ddf4656fd86e93751f"
            },
            {
              "version": "82bd38bd5467ece1ee274b493f51326cf5220a5a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "f3820dce042a673fcb28cc31c87ee14257e21a17"
            },
            {
              "version": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "534cd7ecbbc6e8a974f4003a5c1557439c6e0a72"
            },
            {
              "version": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "e6c1cb728e389354203a72bc77464c222a247aeb"
            },
            {
              "version": "e4650d7ae4252f67e997a632adfae0dd74d3a99a",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fb9f88a33c516ea5c0bcd9a22ca288b246b34567"
            },
            {
              "version": "843cacb88f42f426973f1ed11c6fb562558efb27",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.239",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.271"
            },
            {
              "version": "5.15.186",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.222"
            },
            {
              "version": "6.1.129",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.189"
            },
            {
              "version": "6.6.76",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.158"
            },
            {
              "version": "6.12.13",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.111"
            },
            {
              "version": "5.4.297",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.13",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.13"
            },
            {
              "version": "5.10.271",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.222",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.189",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.158",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.111",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.18.53",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "7.2.7",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "7.2.*"
            },
            {
              "version": "7.3",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}