Important: kernel security, bug fix, and enhancement update

The kernel packages contain the Linux kernel, the core of any Linux operating system. Security Fixes: kernel: crypto: afalg - zero initialize memory allocated via sockkmalloc CVE-2025-71113 kernel: scsi: core: Wake up the error handler when final completions race against each other CVE-2026-23110...

CVE-2026-63991

A flaw was found in the Linux kernel's Bluetooth 6lowpan module. This vulnerability occurs because the sendmcastpkt function does not properly check the return value of skbclone, which can be null if memory allocation fails. An attacker could exploit this by triggering a scenario where skbclone...

CVE-2026-63975

A flaw was found in the Bluetooth L2CAP Logical Link Control and Adaptation Protocol component of the Linux kernel. When a device receives a connection response with an already-assigned destination Channel Identifier CID, the system may crash. This occurs because the kernel's procedure for...

CVE-2026-63948

A flaw was found in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol L2CAP component. A reference leak occurs in the l2capchantimeout function. When a channel's connection is null, an early exit path in the function fails to release a held channel reference. This oversigh...

CVE-2026-10680

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10675

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-63944

A flaw was found in the Linux kernel's Bluetooth subsystem. This vulnerability, a Use-After-Free UAF, allows an attacker to access memory after it has been freed. This can lead to a system crash, resulting in a Denial of Service DoS, or potentially enable an attacker to execute malicious code. Th...

CVE-2026-63947

A flaw was found in the Linux kernel's Bluetooth Human Interface Device Protocol HIDP. A remote attacker, by sending specially crafted truncated packets from a paired Bluetooth device, could trigger an out-of-bounds read in the hidpinputreport function. This vulnerability may lead to unintended...

EUVD-2026-46449

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10680 Out-of-bounds access in Zephyr BR/EDR L2CAP configuration request handling via `uint16_t` length underflow

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10680 Out-of-bounds access in Zephyr BR/EDR L2CAP configuration request handling via `uint16_t` length underflow

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10680 Out-of-bounds access in Zephyr BR/EDR L2CAP configuration request handling via `uint16_t` length underflow

The Classic BR/EDR L2CAP signaling handlers l2capbrconfreq and l2capbrconfrsp in subsys/bluetooth/host/classic/l2capbr.c validated the minimum command size against buf-len the bytes remaining in the whole received PDU instead of len the per-command data length from the L2CAP signaling header...

CVE-2026-10680

CVE-2026-10680 affects Zephyr Project’s Classic BR/EDR L2CAP signaling: l2cap_br_conf_req() and l2cap_br_conf_rsp() validate the per-command length against the whole PDU length (buf->len) instead of the per-command len, allowing underflow of opt_len and an out-of-bounds read/write during confi...

CVE-2026-10675 Bluetooth Mesh PB-ADV: invalidated provisioning link kept alive indefinitely, blocking (re)provisioning (DoS)

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-10675 Bluetooth Mesh PB-ADV: invalidated provisioning link kept alive indefinitely, blocking (re)provisioning (DoS)

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-10675 Bluetooth Mesh PB-ADV: invalidated provisioning link kept alive indefinitely, blocking (re)provisioning (DoS)

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-10675

Zephyr Project Bluetooth Mesh PB-ADV vulnerability (CVE-2026-10675) in prov_msg_recv() reschedules the provisioning watchdog timer unconditionally at the top of the function, before FCS and ADV_LINK_INVALID checks. If a provisioning attempt fails (ADV_LINK_INVALID set), a malicious, unauthenticat...

EUVD-2026-46445

In Zephyr's Bluetooth Mesh PB-ADV provisioning bearer subsys/bluetooth/mesh/pbadv.c, provmsgrecv rescheduled the provisioning protocol watchdog timer unconditionally at the top of the function, before the FCS check and before the ADVLINKINVALID check. Once a provisioning attempt fails, provfailed...

CVE-2026-63871

A flaw was found in the Linux kernel's Bluetooth ISO subsystem. This vulnerability, a data-race, occurs because certain functions access socket-related data without proper synchronization. Specifically, isoconnectbis, isoconnectcis, isolistenbis, and isoconnbigsync can read critical fields while...

kernel: Bluetooth: l2cap: Add missing chan lock in l2cap_ecred_reconf_rsp

A flaw was found in the Linux kernel's Bluetooth Logical Link Control and Adaptation Protocol L2CAP implementation. A remote Bluetooth Low Energy BLE device can exploit this by sending a specially crafted L2CAP ECRED reconfiguration response. This can lead to the corruption of the channel list,...