AZL-6457 CVE-2020-14309 affecting package grub2 for versions less than 2.06~rc1-7

There's an issue with grub2 in all versions before 2.06 when handling squashfs filesystems containing a symbolic link with name length of UINT32 bytes in size. The name size leads to an arithmetic overflow leading to a zero-size allocation further causing a heap-based buffer overflow with attacke...