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              "value": "Issue summary: QUIC server may double free QRX (QUIC record layer RX) object\u003cbr\u003ewhen channel creation fails for initial packet.\u003cbr\u003e\u003cbr\u003eImpact summary: Double free leads to heap corruption, which typically results in \u003cbr\u003etermination of QUIC server process, leading to Denial of Service. There is so\u003cbr\u003efar no evidence that this double free is exploitable for remote code execution,\u003cbr\u003ethus it is considered highly improbable.\u003cbr\u003e\u003cbr\u003eCWE: CWE-415: Double Free\u003cbr\u003e\u003cbr\u003eDescription: In order to validate initial packet, OpenSSL QUIC stack default\u003cbr\u003epacket handler (port_default_packet_handler()) creates a so-called QRX object.\u003cbr\u003eIf the initial packet validates successfully with QRX object, the default packet\u003cbr\u003ehandler proceeds to channel (connection object) creation. The QRX object used\u003cbr\u003efor packet validation is passed to port_bind_channel(), so it becomes part of\u003cbr\u003ethe newly created connection. If port_bind_channel() fails, then it also frees\u003cbr\u003ethe QRX object. Once port_bind_channel() returns, the port_default_packet_handler()\u003cbr\u003edetects the failure and proceeds to the error branch, where the same QRX object is\u003cbr\u003efreed for the second time.\u003cbr\u003e\u003cbr\u003eThe failure in port_bind_channel() function can be induced with a relatively\u003cbr\u003elow effort by a malformed (non RFC 9000 compliant) INITIAL packet. If the packet\u003cbr\u003ecarries DCID (destination connection ID) which is shorter than 8 bytes, then\u003cbr\u003eport_bind_channel() jumps to the error path after ossl_quic_lcidm_enrol_odcid()\u003cbr\u003edetects that the DCID has invalid length.\u003cbr\u003e\u003cbr\u003eFIPS impact: no\u003cbr\u003eThe FIPS module is not affected, as the QUIC implementation is outside of\u003cbr\u003ethe OpenSSL FIPS module boundary."
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