I've noticed this file in /tmp on my Linux workstation after trying the new remote Linux feature in Qt Creator:

$  file /tmp/cmdbridge.aAfmmR6DvW
/tmp/cmdbridge.aAfmmR6DvW: ELF 64-bit LSB executable, x86-64, version 1 (SYSV), statically linked, BuildID[sha1]=c530209beab941e84e9b4e252629bec40653ae4b, stripped

("statically linked" in this case probably means "Go executable")

This is good, except for the fact that it is in /tmp. I don't know if that came from my environment's $TMPDIR or if it is hardcoded. Either way, that's wrong, because /tmp can be mounted noexec and is not guaranteed to be a Unix filesystem with support for the +x attribute.

Please upload the executable to $XDG_RUNTIME_DIR if that is defined. If not, then fall back to other places.