CVE-2026-53364 (GCVE-0-2026-53364)

Vulnerability from cvelistv5 – Published: 2026-07-13 17:33 – Updated: 2026-07-13 17:33
VLAI
Title
Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate() hci_le_big_terminate() allocates iso_list_data via kzalloc_obj but returns 0 without freeing it when neither pa_sync_term nor big_sync_term flags are set after evaluating the PA and BIG sync connection state. This early-return path was introduced when hci_le_big_terminate() was refactored to take struct hci_conn instead of raw u8 parameters, adding PA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue failure does not cover this path.
Severity
No CVSS data available.
Assigner
References
Impacted products
Vendor Product Version
Linux Linux Affected: a7bcffc673de219af2698fbb90627016233de67b , < e6b78019664dfe37c3dc707f50e7b453d6c7726d (git)
Affected: a7bcffc673de219af2698fbb90627016233de67b , < a59d4f4217e6200ca9180643e5738a87d3fa8be0 (git)
Affected: a7bcffc673de219af2698fbb90627016233de67b , < bfa9d28960ed677d556bdf097073bc3129686229 (git)
Affected: 087812a6119b4cd5c9d658b48aee40a25707a1c6 (git)
Affected: 6.16.4 , < 6.17 (semver)
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Linux Linux Affected: 6.17
Unaffected: 0 , < 6.17 (semver)
Unaffected: 6.18.35 , ≤ 6.18.* (semver)
Unaffected: 7.0.12 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
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{
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              "negate": false,
              "operator": "OR"
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      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()\n\nhci_le_big_terminate() allocates iso_list_data via kzalloc_obj but\nreturns 0 without freeing it when neither pa_sync_term nor big_sync_term\nflags are set after evaluating the PA and BIG sync connection state.\n\nThis early-return path was introduced when hci_le_big_terminate() was\nrefactored to take struct hci_conn instead of raw u8 parameters, adding\nPA/BIG flag evaluation logic. The existing kfree() on hci_cmd_sync_queue\nfailure does not cover this path."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-13T17:33:52.302Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
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          "url": "https://git.kernel.org/stable/c/e6b78019664dfe37c3dc707f50e7b453d6c7726d"
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          "url": "https://git.kernel.org/stable/c/a59d4f4217e6200ca9180643e5738a87d3fa8be0"
        },
        {
          "url": "https://git.kernel.org/stable/c/bfa9d28960ed677d556bdf097073bc3129686229"
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      ],
      "title": "Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()",
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  "cveMetadata": {
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    "cveId": "CVE-2026-53364",
    "datePublished": "2026-07-13T17:33:52.302Z",
    "dateReserved": "2026-06-09T07:44:35.400Z",
    "dateUpdated": "2026-07-13T17:33:52.302Z",
    "state": "PUBLISHED"
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    "redhat_vex": {
      "aggregate_severity": "Low",
      "current_release_date": "2026-07-14T16:22:38+00:00",
      "cve": "CVE-2026-53364",
      "id": "CVE-2026-53364",
      "initial_release_date": "2026-07-13T00:00:00+00:00",
      "product_status:known_affected": "184",
      "product_status:known_not_affected": "90",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: hci_conn: Fix memory leak in hci_le_big_terminate()",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-53364.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.
  • 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.


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