odhcpd: pre-auth remote DoS via size_t underflow in dhcpv6_ia_handle_IAs (stack BOF, canary-terminated)

{
                    "vendor": "openwrt",
                    "product": "odhcpd",
                    "versions": [
                        {
                            "version": "< c6792bac3905d4bf726d914e9994f6d4b98c5b57",
                            "status": "affected"
                        }
                    ]
                }

{
                    "vendor": "openwrt",
                    "product": "openwrt",
                    "versions": [
                        {
                            "version": "< 25.12.5",
                            "status": "affected"
                        }
                    ]
                }