CLSA-2022-1670874310 Fix CVE(s): CVE-2022-4141, CVE-2022-3520

SECURITY UPDATE: With a Visual block a put command column may go negative - debian/patches/CVE-2022-3520.patch: Check that the column does not become negative - CVE-2022-3520 SECURITY UPDATE: Invalid memory access in substitute with function that goes to another file -...