UBUNTU-CVE-2025-64438

See a problem?
Please try reporting it to the source first.
Source
https://ubuntu.com/security/CVE-2025-64438
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64438.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2025-64438
Upstream
Published
2026-02-03T20:15:00Z
Modified
2026-02-23T07:05:23.610683Z
Severity
  • 1.7 (Low) CVSS_V4 - CVSS: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 CVSS Calculator
  • 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
  • Ubuntu - medium
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

Ubuntu:Pro:22.04:LTS / fastdds

Package

Name
fastdds
Purl
pkg:deb/ubuntu/fastdds@2.5.0+ds-3ubuntu0.1~esm1?arch=source&distro=esm-apps/jammy

Affected ranges

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

Affected versions

2.*
2.1.0+ds-9
2.4.1+ds-1
2.5.0+ds-3
2.5.0+ds-3ubuntu0.1~esm1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fastdds-tools",
            "binary_version": "2.5.0+ds-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "libfastrtps-dev",
            "binary_version": "2.5.0+ds-3ubuntu0.1~esm1"
        },
        {
            "binary_name": "libfastrtps2.5",
            "binary_version": "2.5.0+ds-3ubuntu0.1~esm1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64438.json"

Ubuntu:24.04:LTS / fastdds

Package

Name
fastdds
Purl
pkg:deb/ubuntu/fastdds@2.11.2+ds-6.1build3?arch=source&distro=noble

Affected ranges

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

Affected versions

2.*
2.10.1+ds-3
2.11.2+ds-6
2.11.2+ds-6ubuntu1
2.11.2+ds-6.1build2
2.11.2+ds-6.1build3

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fastdds-tools",
            "binary_version": "2.11.2+ds-6.1build3"
        },
        {
            "binary_name": "libfastrtps-dev",
            "binary_version": "2.11.2+ds-6.1build3"
        },
        {
            "binary_name": "libfastrtps2.11t64",
            "binary_version": "2.11.2+ds-6.1build3"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64438.json"

Ubuntu:25.10 / fastdds

Package

Name
fastdds
Purl
pkg:deb/ubuntu/fastdds@3.1.2+ds-1build1?arch=source&distro=questing

Affected ranges

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

Affected versions

3.*
3.1.2+ds-1
3.1.2+ds-1build1

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "fastdds-tools",
            "binary_version": "3.1.2+ds-1build1"
        },
        {
            "binary_name": "libfastdds-dev",
            "binary_version": "3.1.2+ds-1build1"
        },
        {
            "binary_name": "libfastdds3.1",
            "binary_version": "3.1.2+ds-1build1"
        },
        {
            "binary_name": "libfastrtps-dev",
            "binary_version": "3.1.2+ds-1build1"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-64438.json"