Affected: Google Protocol Buffers, Google protobuf-java, Google protobuf-javalite, Google protobuf-kotlin, Google protobuf-kotllin-lite, google-protobuf [JRuby Gem], google protobuf, google protobuf-kotlin-lite

Any project that parses untrusted Protocol Buffers data containing an arbitrary number of nested groups / series of SGROUP tags can corrupted by exceeding the stack limit i.e. StackOverflow. Parsing nested groups as unknown fields with DiscardUnknownFieldsParser or Java Protobuf Lite parser, or against Protobuf map fields, creates unbounded recursions that can be abused by an attacker.

Affected: Ubuntu:22.04:LTS: protobuf, Ubuntu:24.04:LTS: protobuf

It was discovered that Protocol Buffers incorrectly handled memory when receiving malicious input using the Java bindings. An attacker could possibly use this issue to cause a denial of service.