CVE-2023-52518 (GCVE-0-2023-52518)

Vulnerability from cvelistv5 – Published: 2024-03-02 21:54 – Updated: 2026-05-11 19:28
VLAI
Title
Bluetooth: hci_codec: Fix leaking content of local_codecs
Summary
In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci_codec: Fix leaking content of local_codecs The following memory leak can be observed when the controller supports codecs which are stored in local_codecs list but the elements are never freed: unreferenced object 0xffff88800221d840 (size 32): comm "kworker/u3:0", pid 36, jiffies 4294898739 (age 127.060s) hex dump (first 32 bytes): f8 d3 02 03 80 88 ff ff 80 d8 21 02 80 88 ff ff ..........!..... 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<ffffffffb324f557>] __kmalloc+0x47/0x120 [<ffffffffb39ef37d>] hci_codec_list_add.isra.0+0x2d/0x160 [<ffffffffb39ef643>] hci_read_codec_capabilities+0x183/0x270 [<ffffffffb39ef9ab>] hci_read_supported_codecs+0x1bb/0x2d0 [<ffffffffb39f162e>] hci_read_local_codecs_sync+0x3e/0x60 [<ffffffffb39ff1b3>] hci_dev_open_sync+0x943/0x11e0 [<ffffffffb396d55d>] hci_power_on+0x10d/0x3f0 [<ffffffffb30c99b4>] process_one_work+0x404/0x800 [<ffffffffb30ca134>] worker_thread+0x374/0x670 [<ffffffffb30d9108>] kthread+0x188/0x1c0 [<ffffffffb304db6b>] ret_from_fork+0x2b/0x50 [<ffffffffb300206a>] ret_from_fork_asm+0x1a/0x30
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2024-07-24 14:55 UTC
CWE
  • CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
Linux CNA under the mitre root
CNA scorecard D 53/100 over 6643 records in the last 180 days details
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < 626535077ba9dc110787540d1fe24881094c15a1 (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1 (git)
Affected: 8961987f3f5fa2f2618e72304d013c8dd5e604a6 , < b938790e70540bf4f2e653dcd74b232494d06c8f (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.16
Unaffected: 0 , < 5.16 (semver)
Unaffected: 6.1.57 , ≤ 6.1.* (semver)
Unaffected: 6.5.7 , ≤ 6.5.* (semver)
Unaffected: 6.6 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
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      "current_release_date": "2026-11-09T16:30:32+00:00",
      "cve": "CVE-2023-52518",
      "id": "CVE-2023-52518",
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      "product_status:fixed": "234",
      "product_status:known_affected": "151",
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      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: Bluetooth: hci_codec: Fix leaking content of local_codecs",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2023/cve-2023-52518.json",
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                    "timestamp": "2024-07-24T14:55:30.640088Z",
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              "programFiles": [
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          "providerMetadata": {
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            "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
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              "url": "https://git.kernel.org/stable/c/b938790e70540bf4f2e653dcd74b232494d06c8f"
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        "cveId": "CVE-2023-52518",
        "datePublished": "2024-03-02T21:54:47.826Z",
        "dateReserved": "2024-02-20T12:30:33.317Z",
        "dateUpdated": "2025-05-04T07:38:26.511Z",
        "state": "PUBLISHED"
      },
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}



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