The tag is present in Lintian version 2.104.262. That is the most recent version we know about.
debian/rules file contains a
DEB_BUILD_MAINT_OPTIONS assignment that enables the
sanitize=+all build flag.
This option instructs the compiler to enable options designed to protect the binary against memory corruptions, memory leaks, use after free, threading data races, and undefined behavior bugs.
However, this options should not be used for production Debian binaries as they can reduce reliability for conformant code, reduce security or even functionality.
Please remove the reference to