Details for this vulnerability have not been published by NIST at this point. Descriptions from software vendor advisories for this issue are provided below.
It was discovered that MariaDB didn't properly validate the content of a packet received from a server. A remote attacker could use this vulnerability to sent a specialy crafted file to cause a denial of service. (CVE-2020-13249)
It was discovered that MariaDB has other security issues. An attacker can cause a hang or frequently repeatable crash (denial of service). (CVE-2020-15180, CVE-2020-2752,CVE-2020-2760,CVE-2020-2812,CVE-2020-2814)
In addition to security fixes, the updated packages contain bug fixes, new features, and possibly incompatible changes.