CVE-2018-6196: Prevent infinite recursion in HTMLlineproc0 caused by the feedtableblock_tag function which did not prevent a negative indent value (bsc#1077559)
CVE-2018-6197: Prevent NULL pointer dereference in formUpdateBuffer (bsc#1077568)
CVE-2018-6198: w3m did not properly handle temporary files when the ~/.w3m directory is unwritable, which allowed a local attacker to craft a symlink attack to overwrite arbitrary files (bsc#1077572)