CVE-2026-52984 (GCVE-0-2026-52984)
Vulnerability from cvelistv5
Published
2026-06-24 16:28
Modified
2026-06-24 16:28
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
Impacted products
Vendor Product Version
Linux Linux Version: 216509dda290f6db92c816dd54b83c1df9da9e76
Version: c2047b0e216c8edce227d7c42f99ac2877dad0e4
Version: 10df49cfca73dfbbdb6c4150d859f7e8926ae427
Version: 3824c5fad18eeb7abe0c4fc966f29959552dca3e
Version: 356078a5c55ec8d2061fcc009fb8599f5b0527f9
Version: f8d4bc455047cf3903cd6f85f49978987dbb3027
Version: f8d4bc455047cf3903cd6f85f49978987dbb3027
Version: f8d4bc455047cf3903cd6f85f49978987dbb3027
Version: 83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31
Version: 5.10.232   ≤
Version: 5.15.175   ≤
Version: 6.1.121   ≤
Version: 6.6.67   ≤
Version: 6.12.6   ≤
Version: 5.4.288   ≤
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{
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      "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."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:28:59.088Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72"
        },
        {
          "url": "https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e"
        },
        {
          "url": "https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177"
        },
        {
          "url": "https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9"
        },
        {
          "url": "https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6"
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          "url": "https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3"
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          "url": "https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b"
        },
        {
          "url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"
        }
      ],
      "title": "net/sched: netem: fix queue limit check to include reordered packets",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
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  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-52984",
    "datePublished": "2026-06-24T16:28:59.088Z",
    "dateReserved": "2026-06-09T07:44:35.376Z",
    "dateUpdated": "2026-06-24T16:28:59.088Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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