Vulnerability-Lookup

GHSA-JVW7-84V9-FR93

Vulnerability from github – Published: 2026-02-04 18:30 – Updated: 2026-02-06 18:30

Details

In the Linux kernel, the following vulnerability has been resolved:

net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.

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{
  "affected": [],
  "aliases": [
    "CVE-2026-23105"
  ],
  "database_specific": {
    "cwe_ids": [],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-02-04T17:16:21Z",
    "severity": null
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag\n\nThis is more of a preventive patch to make the code more consistent and\nto prevent possible exploits that employ child qlen manipulations on qfq.\nuse cl_is_active instead of relying on the child qdisc\u0027s qlen to determine\nclass activation.",
  "id": "GHSA-jvw7-84v9-fr93",
  "modified": "2026-02-06T18:30:31Z",
  "published": "2026-02-04T18:30:44Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-23105"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77f1afd0bb4d5da95236f6114e6d0dfcde187ff6"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/93b8635974fb050c43d07e35e5edfe6e685ca28a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/abd9fc26ea577561a5ef6241a1b058755ffdad0c"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/b8c24cf5268fb3bfb8d16324c3dbb985f698c835"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/d837fbee92453fbb829f950c8e7cf76207d73f33"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/f27047abf7cac1b6f90c3ad60de21ef9f717c26d"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/fac2c67bb2bb732eae4283e45fc338af7e08c254"
    }
  ],
  "schema_version": "1.4.0",
  "severity": []
}

CVE-2026-23105 (GCVE-0-2026-23105)

Vulnerability from cvelistv5 – Published: 2026-02-04 16:08 – Updated: 2026-02-06 16:33

Title

net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag

Summary

In the Linux kernel, the following vulnerability has been resolved: net/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag This is more of a preventive patch to make the code more consistent and to prevent possible exploits that employ child qlen manipulations on qfq. use cl_is_active instead of relying on the child qdisc's qlen to determine class activation.

Severity ?

No CVSS data available.

Assigner

Linux

References

URL

Tags

	https://git.kernel.org/stable/c/fac2c67bb2bb732ea…
	https://git.kernel.org/stable/c/b8c24cf5268fb3bfb…
	https://git.kernel.org/stable/c/f27047abf7cac1b6f…
	https://git.kernel.org/stable/c/93b8635974fb050c4…
	https://git.kernel.org/stable/c/abd9fc26ea577561a…
	https://git.kernel.org/stable/c/77f1afd0bb4d5da95…
	https://git.kernel.org/stable/c/d837fbee92453fbb8…

Impacted products

Vendor

Product

Version

Linux

Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < fac2c67bb2bb732eae4283e45fc338af7e08c254 (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < b8c24cf5268fb3bfb8d16324c3dbb985f698c835 (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < f27047abf7cac1b6f90c3ad60de21ef9f717c26d (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < 93b8635974fb050c43d07e35e5edfe6e685ca28a (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < abd9fc26ea577561a5ef6241a1b058755ffdad0c (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < 77f1afd0bb4d5da95236f6114e6d0dfcde187ff6 (git)
Affected: 462dbc9101acd38e92eda93c0726857517a24bbd , < d837fbee92453fbb829f950c8e7cf76207d73f33 (git)

Linux

Affected: 3.8
Unaffected: 0 , < 3.8 (semver)
Unaffected: 5.10.249 , ≤ 5.10.* (semver)
Unaffected: 5.15.199 , ≤ 5.15.* (semver)
Unaffected: 6.1.162 , ≤ 6.1.* (semver)
Unaffected: 6.6.122 , ≤ 6.6.* (semver)
Unaffected: 6.12.68 , ≤ 6.12.* (semver)
Unaffected: 6.18.8 , ≤ 6.18.* (semver)
Unaffected: 6.19-rc7 , ≤ * (original_commit_for_fix)

Show details on NVD website

JSON

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{
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        {
          "defaultStatus": "unaffected",
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          "programFiles": [
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            }
          ]
        },
        {
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          "versions": [
            {
              "status": "affected",
              "version": "3.8"
            },
            {
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              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
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              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "5.15.*",
              "status": "unaffected",
              "version": "5.15.199",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.1.*",
              "status": "unaffected",
              "version": "6.1.162",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.122",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
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              "versionType": "semver"
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            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.8",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "6.19-rc7",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
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          "nodes": [
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                },
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          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet/sched: qfq: Use cl_is_active to determine whether class is active in qfq_rm_from_ag\n\nThis is more of a preventive patch to make the code more consistent and\nto prevent possible exploits that employ child qlen manipulations on qfq.\nuse cl_is_active instead of relying on the child qdisc\u0027s qlen to determine\nclass activation."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-02-06T16:33:28.539Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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        {
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    "datePublished": "2026-02-04T16:08:26.376Z",
    "dateReserved": "2026-01-13T15:37:45.966Z",
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}

Sightings

Author	Source	Type	Date

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-JVW7-84V9-FR93

CVE-2026-23105 (GCVE-0-2026-23105)

Tags

Sightings

Nomenclature