The updated packages fix security vulnerabilities:
An integer overflow in curl's URL API results in a buffer overflow in libcurl 7.62.0 to and including 7.64.1. (CVE-2019-5435)
A heap buffer overflow in the TFTP receiving code allows for DoS or arbitrary code execution in libcurl versions 7.19.4 through 7.64.1 (CVE-2019-5436).
Double-free vulnerability in the FTP-kerberos code in cURL 7.52.0 to 7.65.3 (CVE-2019-5481).
Heap buffer overflow in the TFTP protocol handler in cURL 7.19.4 to 7.65.3 (CVE-2019-5482).