RIOT is an operating system for internet of things (IoT) devices. In version 2024.04 and prior, the function _parse_advertise, located in /sys/net/application_layer/dhcpv6/client.c, has no minimum header length check for dhcpv6_opt_t after processing dhcpv6_msg_t. This omission could lead to an out-of-bound read, causing system inconsistency. Additionally, the same lack of a header length check is present in the function _preparse_advertise, which is called by _parse_advertise before handling the request. As of time of publication, no known patched version exists.
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