FKIE_CVE-2026-52984

Vulnerability from fkie_nvd - Published: 2026-06-24 17:17 - Updated: 2026-06-24 17:17
Severity
Summary
In the Linux kernel, the following vulnerability has been resolved: net/sched: netem: fix queue limit check to include reordered packets The queue limit check in netem_enqueue() uses q->t_len which only counts packets in the internal tfifo. Packets placed in sch->q by the reorder path (__qdisc_enqueue_head) are not counted, allowing the total queue occupancy to exceed sch->limit under reordering. Include sch->q.qlen in the limit check.
References
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b
416baaa9-dc9f-4396-8d5f-8c081fb06d67https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e
Impacted products
Vendor Product Version
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_netem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "0f875d52db4c921da610e481b72f03cc82fdcb72",
              "status": "affected",
              "version": "216509dda290f6db92c816dd54b83c1df9da9e76",
              "versionType": "git"
            },
            {
              "lessThan": "ef9a41b3870fb90577da5b2de5bd140022d4021e",
              "status": "affected",
              "version": "c2047b0e216c8edce227d7c42f99ac2877dad0e4",
              "versionType": "git"
            },
            {
              "lessThan": "74fcd8e127200a50ee22ba2b45c164722bdb9177",
              "status": "affected",
              "version": "10df49cfca73dfbbdb6c4150d859f7e8926ae427",
              "versionType": "git"
            },
            {
              "lessThan": "39a66e83ea41fe845631eeb8d326953de27d13f9",
              "status": "affected",
              "version": "3824c5fad18eeb7abe0c4fc966f29959552dca3e",
              "versionType": "git"
            },
            {
              "lessThan": "54b5dbacd00dedffd5e2eed76de1c3839996b5e6",
              "status": "affected",
              "version": "356078a5c55ec8d2061fcc009fb8599f5b0527f9",
              "versionType": "git"
            },
            {
              "lessThan": "8450462eaf91d5d2a9e863507b16d18e814baef3",
              "status": "affected",
              "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027",
              "versionType": "git"
            },
            {
              "lessThan": "936a7dd87251f6f3e88983350833edf60fe6a80b",
              "status": "affected",
              "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027",
              "versionType": "git"
            },
            {
              "lessThan": "4185701fcce6b426b6c3630b25330dddd9c47b0d",
              "status": "affected",
              "version": "f8d4bc455047cf3903cd6f85f49978987dbb3027",
              "versionType": "git"
            },
            {
              "status": "affected",
              "version": "83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31",
              "versionType": "git"
            },
            {
              "lessThan": "5.10.258",
              "status": "affected",
              "version": "5.10.232",
              "versionType": "semver"
            },
            {
              "lessThan": "5.15.209",
              "status": "affected",
              "version": "5.15.175",
              "versionType": "semver"
            },
            {
              "lessThan": "6.1.175",
              "status": "affected",
              "version": "6.1.121",
              "versionType": "semver"
            },
            {
              "lessThan": "6.6.141",
              "status": "affected",
              "version": "6.6.67",
              "versionType": "semver"
            },
            {
              "lessThan": "6.12.91",
              "status": "affected",
              "version": "6.12.6",
              "versionType": "semver"
            },
            {
              "lessThan": "5.5",
              "status": "affected",
              "version": "5.4.288",
              "versionType": "semver"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_netem.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "6.13"
            },
            {
              "lessThan": "6.13",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.10.*",
              "status": "unaffected",
              "version": "5.10.258",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.209",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.175",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.141",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.91",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.33",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.10",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
    }
  ],
  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: netem: fix queue limit check to include reordered packets\n\nThe queue limit check in netem_enqueue() uses q-\u003et_len which only\ncounts packets in the internal tfifo. Packets placed in sch-\u003eq by\nthe reorder path (__qdisc_enqueue_head) are not counted, allowing\nthe total queue occupancy to exceed sch-\u003elimit under reordering.\n\nInclude sch-\u003eq.qlen in the limit check."
    }
  ],
  "id": "CVE-2026-52984",
  "lastModified": "2026-06-24T17:17:09.127",
  "metrics": {},
  "published": "2026-06-24T17:17:09.127",
  "references": [
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b"
    },
    {
      "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
      "url": "https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e"
    }
  ],
  "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
  "vulnStatus": "Received"
}


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Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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