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...