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.
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{ "binaries": [ { "binary_version": "2.5.1-1ubuntu1.16+esm5", "binary_name": "libruby2.5" }, { "binary_version": "2.5.1-1ubuntu1.16+esm5", "binary_name": "ruby2.5" }, { "binary_version": "2.5.1-1ubuntu1.16+esm5", "binary_name": "ruby2.5-dev" } ], "availability": "Available with Ubuntu Pro (Infra-only): https://ubuntu.com/pro" }