Vulnerability-Lookup

GHSA-29W2-R4QV-VCRW

Vulnerability from github – Published: 2026-06-24 18:32 – Updated: 2026-06-24 18:32

Details

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.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-52984"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-24T17:17:09Z",
    "severity": null
  },
  "details": "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": "GHSA-29w2-r4qv-vcrw",
  "modified": "2026-06-24T18:32:42Z",
  "published": "2026-06-24T18:32:42Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-52984"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/0f875d52db4c921da610e481b72f03cc82fdcb72"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/39a66e83ea41fe845631eeb8d326953de27d13f9"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/54b5dbacd00dedffd5e2eed76de1c3839996b5e6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/74fcd8e127200a50ee22ba2b45c164722bdb9177"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/8450462eaf91d5d2a9e863507b16d18e814baef3"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/936a7dd87251f6f3e88983350833edf60fe6a80b"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/ef9a41b3870fb90577da5b2de5bd140022d4021e"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-52984 (GCVE-0-2026-52984)

Vulnerability from cvelistv5 – Published: 2026-06-24 16:28 – Updated: 2026-06-24 16:28

Title

net/sched: netem: fix queue limit check to include reordered packets

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.

Severity

No CVSS data available.

Assigner

Linux

References

8 references

URL	Tags
https://git.kernel.org/stable/c/0f875d52db4c921da…
https://git.kernel.org/stable/c/ef9a41b3870fb9057…
https://git.kernel.org/stable/c/74fcd8e127200a50e…
https://git.kernel.org/stable/c/39a66e83ea41fe845…
https://git.kernel.org/stable/c/54b5dbacd00dedffd…
https://git.kernel.org/stable/c/8450462eaf91d5d2a…
https://git.kernel.org/stable/c/936a7dd87251f6f3e…
https://git.kernel.org/stable/c/4185701fcce6b426b…

Impacted products

2 products

Vendor	Product	Version
Linux	Linux	Affected: 216509dda290f6db92c816dd54b83c1df9da9e76 , < 0f875d52db4c921da610e481b72f03cc82fdcb72 (git) Affected: c2047b0e216c8edce227d7c42f99ac2877dad0e4 , < ef9a41b3870fb90577da5b2de5bd140022d4021e (git) Affected: 10df49cfca73dfbbdb6c4150d859f7e8926ae427 , < 74fcd8e127200a50ee22ba2b45c164722bdb9177 (git) Affected: 3824c5fad18eeb7abe0c4fc966f29959552dca3e , < 39a66e83ea41fe845631eeb8d326953de27d13f9 (git) Affected: 356078a5c55ec8d2061fcc009fb8599f5b0527f9 , < 54b5dbacd00dedffd5e2eed76de1c3839996b5e6 (git) Affected: f8d4bc455047cf3903cd6f85f49978987dbb3027 , < 8450462eaf91d5d2a9e863507b16d18e814baef3 (git) Affected: f8d4bc455047cf3903cd6f85f49978987dbb3027 , < 936a7dd87251f6f3e88983350833edf60fe6a80b (git) Affected: f8d4bc455047cf3903cd6f85f49978987dbb3027 , < 4185701fcce6b426b6c3630b25330dddd9c47b0d (git) Affected: 83c6ab12f08dcc09d4c5ac86fdb89736b28f1d31 (git) Affected: 5.10.232 , < 5.10.258 (semver) Affected: 5.15.175 , < 5.15.209 (semver) Affected: 6.1.121 , < 6.1.175 (semver) Affected: 6.6.67 , < 6.6.141 (semver) Affected: 6.12.6 , < 6.12.91 (semver) Affected: 5.4.288 , < 5.5 (semver)
Linux	Linux	Affected: 6.13 Unaffected: 0 , < 6.13 (semver) Unaffected: 5.10.258 , ≤ 5.10.* (semver) Unaffected: 5.15.209 , ≤ 5.15.* (semver) Unaffected: 6.1.175 , ≤ 6.1.* (semver) Unaffected: 6.6.141 , ≤ 6.6.* (semver) Unaffected: 6.12.91 , ≤ 6.12.* (semver) Unaffected: 6.18.33 , ≤ 6.18.* (semver) Unaffected: 7.0.10 , ≤ 7.0.* (semver) Unaffected: 7.1 , ≤ * (original_commit_for_fix)

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JSON

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{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "net/sched/sch_netem.c"
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              "versionType": "git"
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              "versionType": "git"
            },
            {
              "lessThan": "74fcd8e127200a50ee22ba2b45c164722bdb9177",
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              "versionType": "git"
            },
            {
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              "versionType": "git"
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            {
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              "status": "affected",
              "version": "356078a5c55ec8d2061fcc009fb8599f5b0527f9",
              "versionType": "git"
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            {
              "lessThan": "8450462eaf91d5d2a9e863507b16d18e814baef3",
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            },
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              "versionType": "git"
            },
            {
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              "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"
            },
            {
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              "status": "unaffected",
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              "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"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
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              "cpeMatch": [
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                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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                  "versionStartIncluding": "5.10.232",
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                },
                {
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                  "versionStartIncluding": "5.15.175",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.1.175",
                  "versionStartIncluding": "6.1.121",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-24T16:28:59.088Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
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        {
          "url": "https://git.kernel.org/stable/c/4185701fcce6b426b6c3630b25330dddd9c47b0d"
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      "title": "net/sched: netem: fix queue limit check to include reordered packets",
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    "datePublished": "2026-06-24T16:28:59.088Z",
    "dateReserved": "2026-06-09T07:44:35.376Z",
    "dateUpdated": "2026-06-24T16:28:59.088Z",
    "state": "PUBLISHED"
  },
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}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

Action not permitted

GHSA-29W2-R4QV-VCRW

CVE-2026-52984 (GCVE-0-2026-52984)

Tags

Sightings

Nomenclature