{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "a0bfde167b506423111ddb8cd71930497a40fc54"
            },
            {
              "fixed": "6cb7f67bc28da787499291a562d49a084d9c90cd"
            },
            {
              "fixed": "22559ad7654f61727fc270ee4893da9f4b70cf17"
            },
            {
              "fixed": "77981a507aa0fc001dc37f0dd6631dd2042fed17"
            },
            {
              "fixed": "665da0baaf0396f9ed3c86ccb3955dcd0b73e774"
            },
            {
              "fixed": "5ddb8014261137cadaf83ab5617a588d80a22586"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "b475c1109251e30ec21fb574d72a1c71a4ab0039"
            },
            {
              "last_affected": "2ccde10127447c1a5caad8469fede945bdb62fdf"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.4.16"
            },
            {
              "fixed": "6.5"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.5.3"
            },
            {
              "fixed": "6.6"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "6.6.0"
            },
            {
              "fixed": "6.6.140"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.88"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "6.18.30"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.19.0"
            },
            {
              "fixed": "7.0.7"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46138.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt\n\nhci_le_create_big_complete_evt() iterates over BT_BOUND connections for\na BIG handle using a while loop, accessing ev-\u003ebis_handle[i++] on each\niteration.  However, there is no check that i stays within ev-\u003enum_bis\nbefore the array access.\n\nWhen a controller sends a LE_Create_BIG_Complete event with fewer\nbis_handle entries than there are BT_BOUND connections for that BIG,\nor with num_bis=0, the loop reads beyond the valid bis_handle[] flex\narray into adjacent heap memory.  Since the out-of-bounds values\ntypically exceed HCI_CONN_HANDLE_MAX (0x0EFF), hci_conn_set_handle()\nrejects them and the connection remains in BT_BOUND state.  The same\nconnection is then found again by hci_conn_hash_lookup_big_state(),\ncreating an infinite loop with hci_dev_lock held.\n\nFix this by terminating the BIG if in case not all BIS could be setup\nproperly.",
  "id": "CVE-2026-46138",
  "modified": "2026-07-08T05:39:30.753782372Z",
  "published": "2026-05-28T09:35:54.467Z",
  "references": [
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/22559ad7654f61727fc270ee4893da9f4b70cf17"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/5ddb8014261137cadaf83ab5617a588d80a22586"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/665da0baaf0396f9ed3c86ccb3955dcd0b73e774"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/6cb7f67bc28da787499291a562d49a084d9c90cd"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/77981a507aa0fc001dc37f0dd6631dd2042fed17"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/46xxx/CVE-2026-46138.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-46138"
    },
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    }
  ],
  "schema_version": "1.7.5",
  "severity": [
    {
      "score": "CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "summary": "Bluetooth: hci_event: Fix OOB read and infinite loop in hci_le_create_big_complete_evt"
}