{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.2.8-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: hci_sync: Serialize local codec list cleanup  hci_dev_close_sync() clears hdev-\u003elocal_codecs after releasing hdev-\u003elock. Codec list additions and both traversals in sco_sock_getsockopt() use that lock, but the close path does not. A close and BT_CODEC query can therefore interleave as follows:    hci_dev_close_sync()          sco_sock_getsockopt()                                 hci_dev_lock()                                 fetch codec entry   hci_codec_list_clear()     kfree(entry)                                 read entry-\u003eid  The reader then accesses an entry which the close path has freed. KASAN    BUG: KASAN: slab-use-after-free in sco_sock_getsockopt+0xfa0/0xfe0   Read of size 1 at addr ffff8881001c3450   Call Trace:    sco_sock_getsockopt+0xfa0/0xfe0    do_sock_getsockopt+0x537/0x7b0    __sys_getsockopt+0xf2/0x170   Allocated by task 92:    hci_codec_list_add.isra.0+0x2c/0x440    hci_read_codec_capabilities+0x224/0x590    hci_read_supported_codecs+0x2c2/0x640   Freed by task 92:    kfree+0x131/0x3c0    hci_codec_list_clear+0xd8/0x160    hci_dev_close_sync+0x92a/0xfa0  Take hdev-\u003elock around the clear operation at its existing point in the close path. This makes the clear wait for active readers and prevents a new traversal until the list is empty without changing teardown ordering.",
  "id": "DEBIAN-CVE-2026-98246",
  "modified": "2026-10-07T04:47:32.453197960Z",
  "published": "2026-10-06T09:18:12.783Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-98246"
    }
  ],
  "upstream": [
    "CVE-2026-98246"
  ]
}