{
  "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-2025-68325",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-68325",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-12-18T15:02:50.214Z",
    "updatedAt": "2026-05-23T16:02:41.295Z",
    "importedAt": "2026-10-24T01:57:44.935Z",
    "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: sch_cake: Fix incorrect qlen reduction in cake_drop",
      "summary": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: sch_cake: Fix incorrect qlen reduction in cake_drop\n\nIn cake_drop(), qdisc_tree_reduce_backlog() is used to update the qlen\nand backlog of the qdisc hierarchy. Its caller, cake_enqueue(), assumes\nthat the parent qdisc will enqueue the current packet. However, this\nassumption breaks when cake_enqueue() returns NET_XMIT_CN: the parent\nqdisc stops enqueuing current packet, leaving the tree qlen/backlog\naccounting inconsistent. This mismatch can lead to a NULL dereference\n(e.g., when the parent Qdisc is qfq_qdisc).\n\nThis patch computes the qlen/backlog delta in a more robust way by\nobserving the difference before and after the series of cake_drop()\ncalls, and then compensates the qdisc tree accounting if cake_enqueue()\nreturns NET_XMIT_CN.\n\nTo ensure correct compensation when ACK thinning is enabled, a new\nvariable is introduced to keep qlen unchanged.",
      "affected": [
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "unaffected",
          "versions": [
            {
              "version": "de04ddd2980b48caa8d7e24a7db2742917a8b280",
              "status": "affected",
              "versionType": "git",
              "lessThan": "a3f4e3de41a3f115db35276c6b186ccbc913934a"
            },
            {
              "version": "0dacfc5372e314d1219f03e64dde3ab495a5a25e",
              "status": "affected",
              "versionType": "git",
              "lessThan": "38abf6e931b169ea88d7529b49096f53a5dcf8fe"
            },
            {
              "version": "710866fc0a64eafcb8bacd91bcb1329eb7e5035f",
              "status": "affected",
              "versionType": "git",
              "lessThan": "fcb91be52eb6e92e00b533ebd7c77fecada537e1"
            },
            {
              "version": "aa12ee1c1bd260943fd6ab556d8635811c332eeb",
              "status": "affected",
              "versionType": "git",
              "lessThan": "d01f0e072dadb02fe10f436b940dd957aff0d7d4"
            },
            {
              "version": "ff57186b2cc39766672c4c0332323933e5faaa88",
              "status": "affected",
              "versionType": "git",
              "lessThan": "0b6216f9b3d1c33c76f74511026e5de5385ee520"
            },
            {
              "version": "15de71d06a400f7fdc15bf377a2552b0ec437cf5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "529c284cc2815c8350860e9a31722050fe7117cb"
            },
            {
              "version": "15de71d06a400f7fdc15bf377a2552b0ec437cf5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "3ed6c458530a547ed0c9ea0b02b19bab620be88b"
            },
            {
              "version": "15de71d06a400f7fdc15bf377a2552b0ec437cf5",
              "status": "affected",
              "versionType": "git",
              "lessThan": "9fefc78f7f02d71810776fdeb119a05a946a27cc"
            },
            {
              "version": "7689ab22de36f8db19095f6bdf11f28cfde92f5c",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "62d591dde4defb1333d202410609c4ddeae060b3",
              "status": "affected",
              "versionType": "git"
            },
            {
              "version": "5.10.241",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.10.248"
            },
            {
              "version": "5.15.190",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.15.198"
            },
            {
              "version": "6.1.149",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.1.160"
            },
            {
              "version": "6.6.103",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.6.120"
            },
            {
              "version": "6.12.44",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.12.63"
            },
            {
              "version": "5.4.297",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "5.5"
            },
            {
              "version": "6.16.4",
              "status": "affected",
              "versionType": "semver",
              "lessThan": "6.17"
            }
          ]
        },
        {
          "vendor": "Linux",
          "product": "Linux",
          "defaultStatus": "affected",
          "versions": [
            {
              "version": "6.17",
              "status": "affected"
            },
            {
              "version": "0",
              "status": "unaffected",
              "versionType": "semver",
              "lessThan": "6.17"
            },
            {
              "version": "5.10.248",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.10.*"
            },
            {
              "version": "5.15.198",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "5.15.*"
            },
            {
              "version": "6.1.160",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.1.*"
            },
            {
              "version": "6.6.120",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.6.*"
            },
            {
              "version": "6.12.63",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.12.*"
            },
            {
              "version": "6.17.13",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.17.*"
            },
            {
              "version": "6.18.2",
              "status": "unaffected",
              "versionType": "semver",
              "lessThanOrEqual": "6.18.*"
            },
            {
              "version": "6.19",
              "status": "unaffected",
              "versionType": "original_commit_for_fix",
              "lessThanOrEqual": "*"
            }
          ]
        }
      ]
    }
  }
}