CVE-2026-15892

The mcumgr SMP settings-management group handlers settingsmgmtread, settingsmgmtwrite, and settingsmgmtdelete in subsys/mgmt/mcumgr/grp/settingsmgmt/src/settingsmgmt.c allocate a keyname buffer and, for read, a data buffer via kmalloc when CONFIGMCUMGRGRPSETTINGSBUFFERTYPEHEAP is enabled, relying...

EUVD-2026-77133

The mcumgr SMP settings-management group handlers settingsmgmtread, settingsmgmtwrite, and settingsmgmtdelete in subsys/mgmt/mcumgr/grp/settingsmgmt/src/settingsmgmt.c allocate a keyname buffer and, for read, a data buffer via kmalloc when CONFIGMCUMGRGRPSETTINGSBUFFERTYPEHEAP is enabled, relying...

CVE-2026-15892 Heap memory leak in mcumgr settings-management handlers on access-hook rejection leads to denial of service

The mcumgr SMP settings-management group handlers settingsmgmtread, settingsmgmtwrite, and settingsmgmtdelete in subsys/mgmt/mcumgr/grp/settingsmgmt/src/settingsmgmt.c allocate a keyname buffer and, for read, a data buffer via kmalloc when CONFIGMCUMGRGRPSETTINGSBUFFERTYPEHEAP is enabled, relying...

CVE-2026-15892

CVE-2026-15892 is a heap memory leak in Zephyr Project RTOS 's mcumgr settings-management handlers (settings_mgmt_read(), settings_mgmt_write(), settings_mgmt_delete()). When CONFIG_MCUMGR_GRP_SETTINGS_BUFFER_TYPE_HEAP and CONFIG_MCUMGR_GRP_SETTINGS_ACCESS_HOOK are both enabled, an early return o...

PT-2026-90984

The mcumgr SMP settings-management group handlers settings mgmt read, settings mgmt write, and settings mgmt delete in subsys/mgmt/mcumgr/grp/settings mgmt/src/settings mgmt.c allocate a key name buffer and, for read, a data buffer via k malloc when CONFIG MCUMGR GRP SETTINGS BUFFER TYPE HEAP is...

CVE-2026-10648

mcumgrserialprocessfrag in subsys/mgmt/mcumgr/transport/src/serialutil.c calls netbufreset on the result of smppacketalloc before checking it for NULL. smppacketalloc uses netbufallocKNOWAIT against the shared MCUmgr packet pool CONFIGMCUMGRTRANSPORTNETBUFCOUNT, default 4, which returns NULL when...

CVE-2026-10648

mcumgrserialprocessfrag in subsys/mgmt/mcumgr/transport/src/serialutil.c calls netbufreset on the result of smppacketalloc before checking it for NULL. smppacketalloc uses netbufallocKNOWAIT against the shared MCUmgr packet pool CONFIGMCUMGRTRANSPORTNETBUFCOUNT, default 4, which returns NULL when...

CVE-2026-10648 NULL-pointer dereference in MCUmgr serial/console SMP transport on buffer-pool exhaustion

mcumgrserialprocessfrag in subsys/mgmt/mcumgr/transport/src/serialutil.c calls netbufreset on the result of smppacketalloc before checking it for NULL. smppacketalloc uses netbufallocKNOWAIT against the shared MCUmgr packet pool CONFIGMCUMGRTRANSPORTNETBUFCOUNT, default 4, which returns NULL when...

PT-2026-53755

Name of the Vulnerable Software and Affected Versions Zephyr version 4.4.0 Description An issue exists where the mcumgr serial process frag function in subsys/mgmt/mcumgr/transport/src/serial util.c calls net buf reset on the result of smp packet alloc without first verifying if the result is NUL...

Unspecified vulnerability in Zephyr (CNVD-2021-95624)

Zephyr is an open source, small, scalable real-time operating system. Zephyr suffers from a security vulnerability that stems from the fact that when setup in conjunction with littlefs, MCUmgr can be used to extract all security-related information from the device. No details of the vulnerability...