CVE-2026-64054 (GCVE-0-2026-64054)

Vulnerability from cvelistv5 – Published: 2026-07-19 15:39 – Updated: 2026-07-19 15:39
VLAI
Title
net: shaper: reject duplicate leaves in GROUP request
Summary
In the Linux kernel, the following vulnerability has been resolved: net: shaper: reject duplicate leaves in GROUP request net_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES entries. When userspace supplies the same leaf handle twice, the same old-parent pointer lands twice in old_nodes[]. The cleanup loop double frees the parent. Of course the same parent may still be in old_nodes[] twice if we are moving multiple of its leaves. Note that this patch also implicitly fixes the fact that the i >= leaves_count path forgets to set ret.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: 5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e , < 5098b223f0f0c5c18a3884a8b0ea5bd4a0c7bd75 (git)
Affected: 5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e , < 31767bf852b59f05125b58a17007e4cd1ea9eb2e (git)
Affected: 5d5d4700e75d861e83bf18eb6bf66ff90f85fe4e , < a9a2fa1da619f276580b0d4c5d12efac89e8642b (git)
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Linux Linux Affected: 6.13
Unaffected: 0 , < 6.13 (semver)
Unaffected: 6.18.34 , ≤ 6.18.* (semver)
Unaffected: 7.0.11 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nnet: shaper: reject duplicate leaves in GROUP request\n\nnet_shaper_nl_group_doit() does not deduplicate NET_SHAPER_A_LEAVES\nentries. When userspace supplies the same leaf handle twice, the same\nold-parent pointer lands twice in old_nodes[]. The cleanup loop double\nfrees the parent. Of course the same parent may still be in old_nodes[]\ntwice if we are moving multiple of its leaves.\n\nNote that this patch also implicitly fixes the fact that the\ni \u003e= leaves_count path forgets to set ret."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-19T15:39:36.475Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
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    "datePublished": "2026-07-19T15:39:36.475Z",
    "dateReserved": "2026-07-19T07:54:57.029Z",
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    "state": "PUBLISHED"
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    "redhat_vex": {
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      "current_release_date": "2026-07-20T13:03:18+00:00",
      "cve": "CVE-2026-64054",
      "id": "CVE-2026-64054",
      "initial_release_date": "2026-07-19T00:00:00+00:00",
      "product_status:known_affected": "184",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: net: shaper: reject duplicate leaves in GROUP request",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-64054.json",
      "version": "3"
    }
  }
}



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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.

Sightings

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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.
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  • 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.


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