Maintainers for texlive-lang-cyrillic are Debian TeX Task Force <debian-tex-maint@lists.debian.org>.
You may want to refer to the following packages that are part of the same source: texlive-lang-all, texlive-lang-arabic, texlive-lang-chinese, texlive-lang-cjk, texlive-lang-czechslovak, texlive-lang-english, texlive-lang-european, texlive-lang-french, texlive-lang-german, texlive-lang-greek, texlive-lang-italian, texlive-lang-japanese, texlive-lang-korean, texlive-lang-other, texlive-lang-polish, texlive-lang-portuguese, texlive-lang-spanish.
You might like to refer to the texlive-lang-cyrillic package page, to the Package Tracking System, or to the source package src:texlive-lang's bug page.
If you find a bug not listed here, please report it.