{
  "affected": [
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.1.180-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:13",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.96-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:14",
        "name": "linux"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "7.1.4-1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    },
    {
      "ecosystem_specific": {
        "urgency": "not yet assigned"
      },
      "package": {
        "ecosystem": "Debian:12",
        "name": "linux-6.12"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            },
            {
              "fixed": "6.12.100-1~deb12u1"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ]
    }
  ],
  "details": "In the Linux kernel, the following vulnerability has been resolved:  Bluetooth: btmtksdio: fix infinite loop in btmtksdio_txrx_work()  Every once in a while we see a hung btmtksdio_flush() task:   INFO: task kworker/u17:0:189 blocked for more than 122 seconds.  __cancel_work_timer+0x3f4/0x460  cancel_work_sync+0x1c/0x2c  btmtksdio_flush+0x2c/0x40  hci_dev_open_sync+0x10c4/0x2190  [..]  It all boils down to incorrect time_is_before_jiffies() usage in btmtksdio_txrx_work().  The btmtksdio_txrx_work() loop is expected to be terminated if running for longer than 5*HZ.  However the timeout check is twisted:  time_is_before_jiffies(old_jiffies + 5*HZ) evaluates to true when old_jiffies + 5*HZ is in the past i.e. when a timeout has occurred.  Using OR with time_is_before_jiffies(txrx_timeout) means that: - before the 5-second timeout: the condition is `int_status || false`,   so it loops as long as there are pending interrupts. - after the 5-second timeout: the condition becomes `int_status || true`,   which is always true.  When the loop becomes infinite btmtksdio_txrx_work() loop never terminates and never releases the SDIO host.  Fix loop termination condition to actually enforce a 5*HZ timeout.",
  "id": "DEBIAN-CVE-2026-64409",
  "modified": "2026-09-14T16:47:41.920398197Z",
  "published": "2026-07-25T10:17:24.633Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://security-tracker.debian.org/tracker/CVE-2026-64409"
    }
  ],
  "severity": [
    {
      "score": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ],
  "upstream": [
    "CVE-2026-64409"
  ]
}