{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.187-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.6-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.101-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: qca: fix NVM tag length underflow in TLV parser  In the TLV_TYPE_NVM branch of qca_tlv_check_data() the tag loop bound is \"while (idx \u003c length - sizeof(struct tlv_type_nvm))\". \"length\" is a signed int from the firmware TLV header and sizeof(struct tlv_type_nvm) is a size_t (12), so \"length\" is converted to size_t and any firmware-supplied \"length\" \u003c 12 makes the subtraction wrap to a huge value. The loop body then reads a 12-byte struct tlv_type_nvm past the end of the short vmalloc'd firmware buffer (and the EDL_TAG_ID_* handlers can write past it).  Rewrite the bound as \"idx + sizeof(struct tlv_type_nvm) \u003c= length\"; both operands are non-negative, so it no longer underflows and a \"length\" too small for one record correctly skips the loop.    BUG: KASAN: vmalloc-out-of-bounds in qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421)   Read of size 2 at addr ffffc900000e5004 by task kworker/u9:0/52   Workqueue: hci0 hci_power_on   Call Trace:    ...    kasan_report (mm/kasan/report.c:595)    qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421 drivers/bluetooth/btqca.c:617)    qca_uart_setup (drivers/bluetooth/btqca.c:948)    qca_setup (drivers/bluetooth/hci_qca.c:2029)    hci_uart_setup (drivers/bluetooth/hci_ldisc.c:438)    hci_dev_open_sync (net/bluetooth/hci_sync.c:5227)    hci_power_on (net/bluetooth/hci_core.c:920)    process_one_work (kernel/workqueue.c:3322)    worker_thread (kernel/workqueue.c:3486)    kthread (kernel/kthread.c:436)    ret_from_fork (arch/x86/kernel/process.c:158)    ret_from_fork_asm (arch/x86/entry/entry_64.S:245)",
  "id": "DEBIAN-CVE-2026-64573",
  "modified": "2026-09-14T16:47:49.921502950Z",
  "published": "2026-08-05T08:16:37.057Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64573"
    }
  ],
  "upstream": [
    "CVE-2026-64573"
  ]
}