A buffer over-read exists in curl 7.20.0 to and including curl 7.58.0

[hucarxiao]

Version
latest

What is the security issue or vulnerability?
/curl/lib/transfer.c
A buffer over-read exists in curl 7.20.0 to and including curl 7.58.0 in the RTSP+RTP handling code that allows an attacker to cause a denial of service or information leakage
start from 495 line :
if(conn->handler->readwrite &&
(excess > 0 && !conn->bits.stream_was_rewound))

Security issue or vulnerability information
description: https://nvd.nist.gov/vuln/detail/CVE-2018-1000122

commit:curl/curl@d52dc47

Could you apply for another new CVE and fix it?

readwrite: make sure excess reads don't go beyond buffer end
GHSA-8h6f-6774-3wxg
Bug: https://curl.haxx.se/docs/adv_2018-b047.html