CVE catalog

CVE-2025-64438

fastdds: CVE-2025-64438

Severity: Medium
Published: Feb 3, 2026, 8:15:57 PM UTC
Source: [NVD] · [CVE record]
EPSS: 0.61% · Oct 25, 2026

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.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

Distribution	Package	Release	Version	Status
Debian	fastdds	sid	`3.3.0+ds-3`	vulnerable
Debian	fastdds	trixie	`3.1.2+ds-1`	vulnerable
Debian	fastdds	bookworm	`2.9.1+ds-1+deb12u2`	vulnerable
Debian	fastdds	bookworm-security	`2.9.1+ds-1+deb12u2`	vulnerable

Fixed-version evidence

Distribution	Package	Type	Release	Fixed version	Urgency	Origin	Bugs
Debian	fastdds	source	sid	`(unfixed)`	not yet assigned	Not reported	[1121096]
Debian	fastdds	source	trixie	`(unfixed)`	not yet assigned	Not reported	[1121096]
Debian	fastdds	source	bookworm	`(unfixed)`	not yet assigned	Not reported	[1121096]

[Debian bug #1121096]

Notes

[trixie] fastdds: Minor issue [bookworm] fastdds: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

[fastdds-tools]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps2.9]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps-dev]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · amd64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · arm64 · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
[libfastrtps-doc]Affected
Source package: [fastdds]
Details (4)
- 2.9.1+ds-1+deb12u2 · all · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12
- 2.9.1+ds-1+deb12u2 · all · bookworm-security
  Affected
  dsa · fastdds · debian · bookworm; dsa · fastdds · debian · 12

[Debian 13 (Trixie)]

[fastdds-tools]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds3.1]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds-dev]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1+b1 · amd64 · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1+b1 · arm64 · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastdds-doc]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
[libfastrtps-dev]Affected
Source package: [fastdds]
Details (2)
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13
- 3.1.2+ds-1 · all · trixie
  Affected
  dsa · fastdds · debian · 13

Observed: Oct 24, 2026, 1:06:16 AM UTC

References

[Debian Security Tracker] · [FIRST EPSS] · [OSV Package Vulnerability Database]