Mageia: 2019-0139 Moderate: Libssh2 Integer Overflow Issues

Possible integer overflow in transport read allows out-of-bounds write. (CVE-2019-3855)
Possible integer overflow in keyboard interactive handling allows out-of-bounds write. (CVE-2019-3856)
Possible integer overflow leading to zero-byte allocation and out-of-bounds write. (CVE-2019-3857)
Possible zero-byte allocation leading to an out-of-bounds read. (CVE-2019-3858)
Out-of-bounds reads with specially crafted payloads due to unchecked use of `_libssh2_packet_require` and `_libssh2_packet_requirev`. (CVE-2019-3859)
Out-of-bounds reads with specially crafted SFTP packets. (CVE-2019-3860)
Out-of-bounds reads with specially crafted SSH packets. (CVE-2019-3861)
Out-of-bounds memory comparison. (CVE-2019-3862)
Integer overflow in user authenicate keyboard interactive allows out-of-bounds writes. (CVE-2019-3863)