NULL pointer dereference in the MCTP I2C+GPIO target binding triggerable by a peer I2C controller

{
                    "vendor": "zephyrproject",
                    "product": "zephyr",
                    "collectionURL": "https://github.com/zephyrproject-rtos/zephyr",
                    "packageName": "zephyr",
                    "defaultStatus": "unaffected",
                    "programFiles": [
                        "subsys/pmci/mctp/mctp_i2c_gpio_target.c"
                    ],
                    "programRoutines": [
                        {
                            "name": "mctp_i2c_gpio_target_read_processed"
                        },
                        {
                            "name": "mctp_i2c_gpio_target_read_requested"
                        },
                        {
                            "name": "mctp_i2c_gpio_target_stop"
                        }
                    ],
                    "versions": [
                        {
                            "version": "4.3.0",
                            "status": "affected",
                            "versionType": "semver",
                            "lessThanOrEqual": "4.4.2"
                        }
                    ]
                }