Description
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.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
n/a n/a
n/aaffected
References
- https://hackerone.com/reports/1399856 ↗
- https://www.ruby-lang.org/en/news/2024/03/21/buffer-overread-cve-2024-27280/ ↗
- https://security.netapp.com/advisory/ntap-20250502-0003/ ↗
- http://seclists.org/fulldisclosure/2025/Sep/55 ↗
- http://seclists.org/fulldisclosure/2025/Sep/54 ↗
- http://seclists.org/fulldisclosure/2025/Sep/53 ↗
- https://lists.debian.org/debian-lts-announce/2024/09/msg00000.html ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/27LUWREIFTP3MQAW7QE4PJM4DPAQJWXF/ ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/XYDHPHEZI7OQXTQKTDZHGZNPIJH7ZV5N/ ↗