CVE-2026-19936

The Bluetooth Mesh Access-layer delayable message queue in subsys/bluetooth/mesh/delayablemsg.c shares three intrusive lists busyctx, freectx, freechunks and one kworkdelayable between two cooperative threads with no synchronization: btmeshdelayablemsgmanage runs on the Bluetooth host RX thread,...

CVE-2026-19936

The Bluetooth Mesh Access-layer delayable message queue in subsys/bluetooth/mesh/delayable_msg.c is vulnerable to a NULL pointer dereference due to unsynchronized access to shared intrusive lists (busy_ctx, free_ctx, free_chunks). Specifically, bt_mesh_delayable_msg_manage() (running on the Bluet...

CVE-2026-18418 Out-of-bounds read when the zbus proxy agent IPC backend logs a rejected peer frame's channel name

The zbus proxy agent IPC backend in subsys/zbus/proxyagent/zbusproxyagentipc.c logged the channel name of a rejected inter-domain frame with a plain %s conversion. The frame type struct zbusproxymsg carries a fixed-size channelname array as its last member, and nothing in the transport guarantees...

CVE-2026-19735

The Zephyr TCP stack contains a vulnerability where the RFC 6528 initial-sequence-number (ISN) implementation may use predictable values. If the sys_csrand_get() call fails during early boot (e.g., due to -ENODEV or -EIO from the entropy driver), the system fails to catch the error and leaves the...

CVE-2026-19735 Predictable TCP initial sequence numbers when the RFC 6528 secret key generation fails silently in the Zephyr TCP stack

The RFC 6528 initial-sequence-number implementation in subsys/net/ip/tcp.c derived every TCP ISN from SHA-256uniquekey || four-tuple plus a uptime-derived offset, where uniquekey is a 128-bit secret filled once by syscsrandget. The return value of that call was discarded and the once guard was...

CVE-2026-19570

The LE Audio Broadcast Sink in subsys/bluetooth/audio/bapbroadcastsink.c copies subgroup metadata from a received Basic Audio Announcement BASE into the static Broadcast Audio Scan Service parameter structure modsrcparam without any bounds check. In basesubgroupmetacb the destination element was...

CVE-2026-19570 Out-of-bounds write in LE Audio Broadcast Sink when copying BASE subgroup metadata into the BASS receive state

The LE Audio Broadcast Sink in subsys/bluetooth/audio/bapbroadcastsink.c copies subgroup metadata from a received Basic Audio Announcement BASE into the static Broadcast Audio Scan Service parameter structure modsrcparam without any bounds check. In basesubgroupmetacb the destination element was...

CVE-2026-19570

The LE Audio Broadcast Sink in the Bluetooth subsystem is vulnerable to an out-of-bounds write because it copies subgroup metadata from a received Basic Audio Announcement (BASE) into the mod_src_param structure without proper bounds checking. Specifically, the base_subgroup_meta_cb() function fa...

EUVD-2026-95526

The LE Audio Broadcast Sink in subsys/bluetooth/audio/bapbroadcastsink.c copies subgroup metadata from a received Basic Audio Announcement BASE into the static Broadcast Audio Scan Service parameter structure modsrcparam without any bounds check. In basesubgroupmetacb the destination element was...

CVE-2026-19570 Out-of-bounds write in LE Audio Broadcast Sink when copying BASE subgroup metadata into the BASS receive state

The LE Audio Broadcast Sink in subsys/bluetooth/audio/bapbroadcastsink.c copies subgroup metadata from a received Basic Audio Announcement BASE into the static Broadcast Audio Scan Service parameter structure modsrcparam without any bounds check. In basesubgroupmetacb the destination element was...

CVE-2026-15894

The Zephyr RTOS Bluetooth Mesh stack is vulnerable to a stack-based buffer overflow in the On-Demand Private Proxy solicitation handler (subsys/bluetooth/mesh/solicitation.c). The sol_pdu_decrypt() function copies a received Solicitation PDU into a fixed 17-byte stack buffer without bounding the ...

EUVD-2026-94230

The Bluetooth Mesh On-Demand Private Proxy solicitation handler in subsys/bluetooth/mesh/solicitation.c copies a received Solicitation PDU into a fixed 17-byte stack buffer without bounding the source length. In solpdudecrypt, out is allocated as NETBUFSIMPLE17 and then filled with...

CVE-2026-19186

An integer underflow vulnerability exists in the ieee802154_decipher_data_frame() function within subsys/net/l2/ieee802154/ieee802154_frame.c . The software fails to verify if a received frame is long enough before subtracting header and authentication tag lengths from the total length. Because t...

CVE-2026-15894: Stack-based Buffer Overflow

The Bluetooth Mesh On-Demand Private Proxy solicitation handler in subsys/bluetooth/mesh/solicitation.c copies a received Solicitation PDU into a fixed 17-byte stack buffer without bounding the source length. In solpdudecrypt, out is allocated as NETBUFSIMPLE17 and then filled with...

CVE-2026-19186: Integer Underflow (Wrap or Wraparound)

ieee802154decipherdataframe in subsys/net/l2/ieee802154/ieee802154frame.c computed payloadlen = netpktgetlenpkt - llhdrlen - authtaglen without first checking that the received frame is at least llhdrlen + authtaglen bytes long. All three variables are uint8t, so a frame whose payload is shorter...

Astra Linux – Vulnerability in Linux 5.15

In the Linux kernel, the following vulnerability has been resolved: net/smc: Fixed a possible leak of the pernet namespace in smcinit. In smcinit, registerpernetsubsys&smcnetstatops is called without any error handling. If this call fails, the registration of &smcnetops will not be reversed. And ...

CVE-2026-18747

The MCUmgr SMP-over-console transport decodes a base64 frame, reads a 16-bit packet length from it, verifies a CRC and then unconditionally strips the trailing CRC with rxctxt-nb-len -= 2U; in mcumgrserialprocessfrag subsys/mgmt/mcumgr/transport/src/serialutil.c. mcumgrserialextractlen accepted a...

CVE-2026-18746

parsewriteop in subsys/net/lib/lwm2m/lwm2mmessagehandling.c handles inbound CoAP WRITE/CREATE requests that carry a Block1 option. For the first block of a transfer it called initblockctx and then immediately stored the peer-selected block size with blockctx-ctx.blocksize = blocksize before...

CVE-2026-18746: NULL Pointer Dereference

parsewriteop in subsys/net/lib/lwm2m/lwm2mmessagehandling.c handles inbound CoAP WRITE/CREATE requests that carry a Block1 option. For the first block of a transfer it called initblockctx and then immediately stored the peer-selected block size with blockctx-ctx.blocksize = blocksize before...

CVE-2026-18417: Access of Resource Using Incompatible Type

The native BSD-socket layer recorded a pending asynchronous socket error by type-punning it into struct netcontext's void userdata field ctx-userdata = INTTOPOINTER-status in zsockacceptedcb, zsockreceivedcb, zsockconnectedcb and zsockclosectx in subsys/net/lib/sockets/socketsinet.c, reading it...