CVE-2025-64438
published 2026-02-03CVE-2025-64438: 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…
low1.7CVSS 4.0
AVNACLATPPRNUINVCNVINVALSCNSINSANEUCRXIRXARXMAVXMACXMATXMPRXMUIXMVCXMVIXMVAXMSCXMSIXMSAXSXAUXRXVXREXUX
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.
Affected
7 ranges
| Vendor | Product | Version range | Fixed in |
|---|---|---|---|
| debian | fastdds | — | — |
| eprosima | fast-dds | < 2.6.11 | 2.6.11 |
| eprosima | fast-dds | >= 3.0.0 < 3.3.1 | 3.3.1 |
| eprosima | fast-dds | >= 3.4.0 < 3.4.1 | 3.4.1 |
| eprosima | fast_dds | < 2.6.11 | 2.6.11 |
| eprosima | fast_dds | — | — |
| eprosima | fast_dds | >= 3.0.0 < 3.3.1 | 3.3.1 |
CVSS provenance
nvdv4.01.7LOWCVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
osv1.7LOW