CVE-2025-64438— Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS
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I. Basic Information for CVE-2025-64438
Vulnerability Information
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Vulnerability Title
Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
不可达退出条件的循环(无限循环)
Source: NVD (National Vulnerability Database)
Vulnerability Title
eProsima Fast DDS 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
eProsima Fast DDS是eProsima公司的OMG（对象管理组）DDS（数据分发服务）标准的 C++ 实现。 eProsima Fast DDS 3.4.1之前版本、3.3.1之前版本和2.6.11之前版本存在安全漏洞，该漏洞源于处理RTPS GAP子消息时存在无限循环，可能导致内存耗尽和进程终止。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-64438
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Same Patch Batch · eProsima · 2026-02-03 · 8 CVEs total
| CVE-2025-62599 | 8.6 HIGH | eprosima Fast DDS affected by Out-of-Memory in readPropertySeq via Manipulated DATA Submes |
| CVE-2025-62600 | 8.6 HIGH | eprosima Fast DDS affected by Out-of-Memory in readBinaryPropertySeq via Manipulated DATA |
| CVE-2025-62799 | FastDDS's heap buffer overflow in RTPS DATA_FRAG enables unauthenticated DoS (potential RC | |
| CVE-2025-62602 | FastDDS has heap buffer overflow in readData via Manipulated DATA Submessage when DDS Secu | |
| CVE-2025-62601 | FastDDS has heap buffer overflow in readString via Manipulated DATA Submessage when DDS Se | |
| CVE-2025-62603 | FastDDS has Out-of-memory while parsing GenericMessage when DDS Security is enabled | |
| CVE-2025-64098 | FastDDS has Out-of-memory in readOctetVector via Manipulated DATA Submessage when DDS Secu |
IV. Related Vulnerabilities
Same product: Fast-DDS
- CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated - CVE-2025-62601
FastDDS has heap buffer overflow in readString via Manipulat
Same vendor: eProsima
- CVE-2025-64098
FastDDS has Out-of-memory in readOctetVector via Manipulated - CVE-2025-62799
FastDDS's heap buffer overflow in RTPS DATA_FRAG enables una - CVE-2025-62603
FastDDS has Out-of-memory while parsing GenericMessage when - CVE-2025-62602
FastDDS has heap buffer overflow in readData via Manipulated - CVE-2025-62601
FastDDS has heap buffer overflow in readString via Manipulat
Same weakness: CWE-835
- CVE-2026-42310
Pillow: PDF Parsing Trailer Infinite Loop (DoS) - CVE-2026-41511
OpenMcdf has an Infinite loop DoS via crafted CFB directory - CVE-2026-5407
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6536
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi - CVE-2026-6534
Loop with Unreachable Exit Condition ('Infinite Loop') in Wi
V. Comments for CVE-2025-64438
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