This update for grub2 fixes the following issues: - CVE-2020-10713 - CVE-2020-14308 CVE-2020-14309, CVE-2020-14310, CVE-2020-14311 - CVE-2020-15706 - CVE-2020-15707 - Use overflow checking primitives where the arithmetic expression for buffer allocations may include unvalidated data - Use grub_calloc for overflow check and return NULL when it would occur