{
  "affected": [
    {
      "ranges": [
        {
          "events": [
            {
              "introduced": "427281f9498ed614f9aabc80e46ec077c487da6d"
            },
            {
              "fixed": "70354dbb5f72d9a76da7b031de3cbaf6c7d8fc24"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "2e4edfa1e2bd821a317e7d006517dcf2f3fac68d"
            },
            {
              "fixed": "59fd2f075bca94f030c7c78e94878ea0803d7690"
            },
            {
              "fixed": "a087ed960fce54e9302796229e9d545bbc9bcd4a"
            },
            {
              "fixed": "4fcfb5b2c736785464ff9745f94c6726c5ee2d85"
            },
            {
              "fixed": "c90164ca0f7036942ba088eb7ea8d3f6c2352020"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "last_affected": "ed53949cc92e28aaa3463d246942bda1fbb7f307"
            },
            {
              "last_affected": "1caceadfb50432dbf6d808796cb6c34ebb6d662c"
            },
            {
              "last_affected": "02f05ed44b71152d5e11d29be28aed91c0489b4e"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.6.31"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "5.15.159"
            },
            {
              "fixed": "5.16"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.1.91"
            },
            {
              "fixed": "6.2"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        },
        {
          "events": [
            {
              "introduced": "6.8.10"
            },
            {
              "fixed": "6.9"
            }
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "type": "GIT"
        }
      ]
    },
    {
      "package": {
        "ecosystem": "Linux",
        "name": "Kernel"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.6.148"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.7.0"
            },
            {
              "fixed": "6.12.101"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.9.0"
            },
            {
              "fixed": "6.18.42"
            }
          ],
          "type": "ECOSYSTEM"
        },
        {
          "events": [
            {
              "introduced": "6.13.0"
            },
            {
              "fixed": "7.1.6"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "database_specific": {
    "cna_assigner": "Linux",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64573.json"
  },
  "details": "In the Linux kernel, the following vulnerability has been resolved:\n\nBluetooth: qca: fix NVM tag length underflow in TLV parser\n\nIn the TLV_TYPE_NVM branch of qca_tlv_check_data() the tag loop bound is\n\"while (idx \u003c length - sizeof(struct tlv_type_nvm))\". \"length\" is a signed\nint from the firmware TLV header and sizeof(struct tlv_type_nvm) is a\nsize_t (12), so \"length\" is converted to size_t and any firmware-supplied\n\"length\" \u003c 12 makes the subtraction wrap to a huge value. The loop body\nthen reads a 12-byte struct tlv_type_nvm past the end of the short\nvmalloc'd firmware buffer (and the EDL_TAG_ID_* handlers can write past it).\n\nRewrite the bound as \"idx + sizeof(struct tlv_type_nvm) \u003c= length\"; both\noperands are non-negative, so it no longer underflows and a \"length\" too\nsmall for one record correctly skips the loop.\n\n  BUG: KASAN: vmalloc-out-of-bounds in qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421)\n  Read of size 2 at addr ffffc900000e5004 by task kworker/u9:0/52\n  Workqueue: hci0 hci_power_on\n  Call Trace:\n   ...\n   kasan_report (mm/kasan/report.c:595)\n   qca_download_firmware.isra.0 (drivers/bluetooth/btqca.c:421 drivers/bluetooth/btqca.c:617)\n   qca_uart_setup (drivers/bluetooth/btqca.c:948)\n   qca_setup (drivers/bluetooth/hci_qca.c:2029)\n   hci_uart_setup (drivers/bluetooth/hci_ldisc.c:438)\n   hci_dev_open_sync (net/bluetooth/hci_sync.c:5227)\n   hci_power_on (net/bluetooth/hci_core.c:920)\n   process_one_work (kernel/workqueue.c:3322)\n   worker_thread (kernel/workqueue.c:3486)\n   kthread (kernel/kthread.c:436)\n   ret_from_fork (arch/x86/kernel/process.c:158)\n   ret_from_fork_asm (arch/x86/entry/entry_64.S:245)",
  "id": "CVE-2026-64573",
  "modified": "2026-08-06T03:31:29.308346788Z",
  "published": "2026-08-05T08:08:09.669Z",
  "references": [
    {
      "type": "PACKAGE",
      "url": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/4fcfb5b2c736785464ff9745f94c6726c5ee2d85"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/59fd2f075bca94f030c7c78e94878ea0803d7690"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/70354dbb5f72d9a76da7b031de3cbaf6c7d8fc24"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/a087ed960fce54e9302796229e9d545bbc9bcd4a"
    },
    {
      "type": "WEB",
      "url": "https://git.kernel.org/stable/c/c90164ca0f7036942ba088eb7ea8d3f6c2352020"
    },
    {
      "type": "ADVISORY",
      "url": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/64xxx/CVE-2026-64573.json"
    },
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-64573"
    }
  ],
  "schema_version": "1.8.0",
  "summary": "Bluetooth: qca: fix NVM tag length underflow in TLV parser"
}