CVE-2024-27280

A buffer-overread issue was discovered in StringIO 3.0.1, as distributed in
Ruby 3.0.x through 3.0.6 and 3.1.x through 3.1.4. The ungetbyte and ungetc
methods on a StringIO can read past the end of a string, and a subsequent
call to StringIO.gets may return the memory value. 3.0.3 is the main fixed
version; however, for Ruby 3.0 users, a fixed version is stringio 3.0.1.1,
and for Ruby 3.1 users, a fixed version is stringio 3.0.1.2.

Notes