CVE-2026-74304

The CVE-2026-74304 issue affects the Linux kernel Bluetooth hci_qca driver. In qca_setup(), hu->serdev may be NULL for hci_uart attached via non-serdev paths, yet the code unconditionally calls serdev_device_get_drvdata(hu->serdev) and dereferences it, causing a NULL pointer dereference. Th...

EUVD-2026-59451

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcasetup for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcasetup unconditionally calls serdevdevicegetdrvdatahu-serdev and dereferences th...

CVE-2026-74304 Bluetooth: hci_qca: fix NULL pointer dereference in qca_setup() for non-serdev device

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcasetup for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcasetup unconditionally calls serdevdevicegetdrvdatahu-serdev and dereferences th...

CVE-2026-74303 Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcadmphdr for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcadmphdr unconditionally dereferences hu-serdev-dev.driver-name, causing a NULL...

CVE-2026-74303

The CVE-2026-74303 issue concerns the Linux kernel Bluetooth stack (hci_qca). A NULL pointer dereference occurs in qca_dmp_hdr() when handling non-serdev devices: hu->serdev is NULL for hci_uart attached via non-serdev paths, yet the function dereferences hu->serdev->dev.driver->name....

EUVD-2026-59450

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcadmphdr for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcadmphdr unconditionally dereferences hu-serdev-dev.driver-name, causing a NULL...

CVE-2026-74303 Bluetooth: hci_qca: fix NULL pointer dereference in qca_dmp_hdr() for non-serdev device

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcadmphdr for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcadmphdr unconditionally dereferences hu-serdev-dev.driver-name, causing a NULL...

CVE-2026-74304 Bluetooth: hci_qca: fix NULL pointer dereference in qca_setup() for non-serdev device

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hciqca: fix NULL pointer dereference in qcasetup for non-serdev device hu-serdev is NULL for hciuart attached via non-serdev paths, but qcasetup unconditionally calls serdevdevicegetdrvdatahu-serdev and dereferences th...

CVE-2026-74302 Bluetooth: hci_core: Fix UAF in hci_unregister_dev()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: Fix UAF in hciunregisterdev hciunregisterdev does not disable cmdtimer and ncmdtimer before the hcidev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory...

CVE-2026-74302

The CVE-2026-74302 issue affects the Linux kernel Bluetooth HCI core, specifically hci_unregister_dev(), where cmd_timer and ncmd_timer are not disabled before freeing the hci_dev, leading to use-after-free. The documented fix adds disable_delayed_work_sync() alongside existing disable_work_sync(...

CVE-2026-74302 Bluetooth: hci_core: Fix UAF in hci_unregister_dev()

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: Fix UAF in hciunregisterdev hciunregisterdev does not disable cmdtimer and ncmdtimer before the hcidev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory...

EUVD-2026-59449

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hcicore: Fix UAF in hciunregisterdev hciunregisterdev does not disable cmdtimer and ncmdtimer before the hcidev structure is freed. If a timeout fires during device teardown, the callback dereferences freed memory...

CVE-2026-74301

CVE-2026-74301 documents a fix in the Linux kernel for the Bluetooth btmtk driver where an allocated URB could leak if btmtk_isopkt_pad() fails during alloc_mtk_intr_urb. The remedy is to call usb_free_urb() before returning the error, preventing the URB leak and releasing associated resources. N...

CVE-2026-74300 Bluetooth: hci: validate codec capability element length

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci: validate codec capability element length Read Local Codec Capabilities returns a sequence of capability elements. Each element starts with a one-byte length followed by that many payload bytes...

EUVD-2026-59447

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci: validate codec capability element length Read Local Codec Capabilities returns a sequence of capability elements. Each element starts with a one-byte length followed by that many payload bytes...

CVE-2026-74300 Bluetooth: hci: validate codec capability element length

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: hci: validate codec capability element length Read Local Codec Capabilities returns a sequence of capability elements. Each element starts with a one-byte length followed by that many payload bytes...

CVE-2026-74300

CVE-2026-74300 affects the Linux kernel Bluetooth HCI codec capability parsing. The issue: when reading Local Codec Capabilities, each capability element starts with a length byte followed by payload; the parser validated only the remaining skb length against caps->len, allowing a malformed re...

EUVD-2026-59236

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: avoid untracked enable work lowpanenableset allocates a temporary work item and schedules doenableset on systemwq, then returns to debugfs. The debugfs active operation has ended at that point, but the worker...

CVE-2026-72337

CVE-2026-72337 : Linux kernel memory safety issue in Bluetooth 6lowpan handling. The flaw stems from lowpan_enable_set() allocating a temporary work item and scheduling do_enable_set() on system_wq, while the debugfs write returns and the worker may run later, potentially operating on stale state...

CVE-2026-72337 Bluetooth: 6lowpan: avoid untracked enable work

In the Linux kernel, the following vulnerability has been resolved: Bluetooth: 6lowpan: avoid untracked enable work lowpanenableset allocates a temporary work item and schedules doenableset on systemwq, then returns to debugfs. The debugfs active operation has ended at that point, but the worker...