DEBIAN-CVE-2025-64438

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Source
https://security-tracker.debian.org/tracker/CVE-2025-64438
Import Source
https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64438.json
JSON Data
https://api.osv.dev/v1/vulns/DEBIAN-CVE-2025-64438
Upstream
Published
2026-02-03T20:15:57Z
Modified
2026-09-01T20:05:55Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
[none]
Details

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.

References

Affected packages

Debian:12 / fastdds

Package

Name
fastdds
Purl
pkg:deb/debian/fastdds?arch=source&distro=bookworm

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

2.*
2.9.1+ds-1
2.9.1+ds-1+deb12u1
2.9.1+ds-1+deb12u2
2.10.1+ds-1
2.10.1+ds-2
2.10.1+ds-3
2.11.2+ds-1
2.11.2+ds-2
2.11.2+ds-3
2.11.2+ds-4
2.11.2+ds-5
2.11.2+ds-6
2.11.2+ds-6.1~exp1
2.11.2+ds-6.1
2.14.0+ds-1
2.14.0+ds-2
2.14.0+ds-3
2.14.0+ds-4
2.14.1+ds-1
2.14.2+ds-1
2.14.3+ds-1
3.*
3.0.0+ds-1
3.0.0+ds-2
3.0.0+ds-3
3.0.1+ds-1
3.1.0+ds-1
3.1.0+ds-2
3.1.2+ds-1
3.3.0+ds-1
3.3.0+ds-2
3.3.0+ds-3
3.6.1+ds-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64438.json"

Debian:13 / fastdds

Package

Name
fastdds
Purl
pkg:deb/debian/fastdds?arch=source&distro=trixie

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

3.*
3.1.2+ds-1
3.3.0+ds-1
3.3.0+ds-2
3.3.0+ds-3
3.6.1+ds-1

Ecosystem specific 

{
    "urgency": "not yet assigned"
}

Database specific

source 
"https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2025-64438.json"