Description
Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group ). Prior to versions 3.4.1, 3.3.1, and 2.6.11, a remotely triggerable Out-of-Memory (OOM) denial-of-service exists in Fast -DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList .base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s equence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. No authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS limit (non-ASan / unlimited), memory consumption was observed to rise to ~64 GB. Versions 3.4.1, 3.3.1, and 2.6.11 patch t he issue.
INFO
Published Date :
2026-02-03T19:32:22.265Z
Last Modified :
2026-02-03T20:30:50.310Z
Source :
GitHub_M
AFFECTED PRODUCTS
The following products are affected by CVE-2025-64438 vulnerability.
| Vendors | Products |
|---|---|
| Eprosima |
|
REFERENCES
Here, you will find a curated list of external links that provide in-depth information to CVE-2025-64438.
