A vulnerability was discovered in spice, in the server's protocol handling. An authenticated attacker could send specially crafted messages to the spice server, causing out-of-bounds memory accesses leading to parts of server memory being leaked or a crash (CVE-2017-7506).
The Mageia 5 package has been patched to fix this issue. The Mageia 6 package has been updated to version 0.13.90, containing fixes for this and several other issues.