CVE-2026-11810 NULL-pointer dereference in UpdateHub OTA agent on empty inner metadata array (remote DoS)

The UpdateHub firmware-update agent's probe handler zimplupdatehubprobe in subsys/mgmt/updatehub/updatehub.c parses the JSON metadata returned by the update server into a fixed two-level nested-array struct. After parsing it validates only the outer array length objectslen != 2 and then...

CVE-2026-11810

CVE-2026-11810 affects Zephyr’s UpdateHub firmware-update agent. The probe handler z_impl_updatehub_probe() parses CoAP-provided JSON metadata into a two-level nested array; it only validates the outer array length and then dereferences objects[1].objects[0].objects.sha256sum with strlen() withou...