On Sat, 31 Aug 2019 15:13:27 +0200 (CEST)
[off-list ref] wrote:

Hi,

there are two potentially dangerous calls of strcpy function in the program "tc". In the attachment is a patch that fixes this issue.

Tomas

This looks correct.

Please fix with strlcpy() instead; that is clearer.
Plus you can use XT_EXTENSION_MAX_NAMELEN here (optional).