Bluetooth: hci_codec: Fix leaking content of local_codecs

{
  "id": "32421bcbfaee24e919f605ebeb8d542ec344d1aa5b3c29e8112340658def377e",
  "url": "https://osv.dev/vulnerability/CVE-2023-52518",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "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: [] __kmalloc+0x47/0x120 [] hci_codec_list_add.isra.0+0x2d/0x160 [] hci_read_codec_capabilities+0x183/0x270 [] hci_read_supported_codecs+0x1bb/0x2d0 [] hci_read_local_codecs_sync+0x3e/0x60 [] hci_dev_open_sync+0x943/0x11e0 [] hci_power_on+0x10d/0x3f0 [] process_one_work+0x404/0x800 [] worker_thread+0x374/0x670 [] kthread+0x188/0x1c0 [] ret_from_fork+0x2b/0x50 [] ret_from_fork_asm+0x1a/0x30",
    "evidence": "osv:CVE-2023-52518",
    "products": [
      {
        "name": {
          "value": "Kernel",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [
          {
            "value": "6.1.57",
            "evidence": "/affected/1/ranges"
          },
          {
            "value": "6.5.7",
            "evidence": "/affected/1/ranges"
          }
        ],
        "affected_versions": []
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "CVE-2023-52518",
      "aliases": [
        "CVE-2023-52518"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
              "type": "GIT",
              "events": [
                {
                  "introduced": "8961987f3f5fa2f2618e72304d013c8dd5e604a6"
                },
                {
                  "fixed": "626535077ba9dc110787540d1fe24881094c15a1"
                },
                {
                  "fixed": "eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1"
                },
                {
                  "fixed": "b938790e70540bf4f2e653dcd74b232494d06c8f"
                }
              ]
            }
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52518.json"
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "5.16.0"
                },
                {
                  "fixed": "6.1.57"
                }
              ]
            },
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "6.2.0"
                },
                {
                  "fixed": "6.5.7"
                }
              ]
            }
          ],
          "package": {
            "name": "Kernel",
            "ecosystem": "Linux"
          },
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-52518.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:31.495732267Z",
      "provider": "osv",
      "references": [
        "https://git.kernel.org/stable/c/626535077ba9dc110787540d1fe24881094c15a1",
        "https://git.kernel.org/stable/c/b938790e70540bf4f2e653dcd74b232494d06c8f",
        "https://git.kernel.org/stable/c/eea5a8f0c3b7c884d2351e75fbdd0a3d7def5ae1",
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52518.json",
        "https://nvd.nist.gov/vuln/detail/CVE-2023-52518",
        "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
      ],
      "provider_metadata": {
        "cna_assigner": "Linux",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2023/52xxx/CVE-2023-52518.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2023-52518",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 498351,
  "published_at": "2024-03-02T21:54:47.826+00:00"
}