Description
eprosima Fast DDS is a C++ implementation of the Data Distribution Service standard of the Object Management Group. Prior to versions 2.10.0, 2.9.2, and 2.6.5, a malformed GAP submessage can trigger assertion failure, crashing FastDDS. Version 2.10.0, 2.9.2, and 2.6.5 contain a patch for this issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| eProsima | Fast-DDS | < 2.6.5, >= 2.7.0, < 2.9.2 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 13 | fastdds | 2.10.1+ds-2 | — |
| Debian 12 | fastdds | 2.9.1+ds-1+deb12u1 | DSA-5481-1 |
| Debian 11 | fastdds | 2.1.0+ds-9+deb11u1 | DSA-5481-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | fastdds | 2.5.0+ds-3ubuntu0.1~esm1 | USN-6306-1 |
Advisories 2
- USN-6306-1 fastdds vulnerabilities Ubuntu Security Notices (USN) · Apr 27, 2026
- DSA-5481-1 fastdds - security update Debian Security (DSA / DLA) · Mar 9, 2026
References
- https://github.com/eProsima/Fast-DDS/security/advisories/GHSA-fcr6-x23w-94wp
- https://bombshell.gtisc.gatech.edu/ddsfuzz/pcap/fastdds-assert-230509.pcap
- https://github.com/eProsima/Fast-DDS/blob/v2.9.1/include/fastdds/rtps/common/SequenceNumber.h#L238-L252
- https://github.com/eProsima/Fast-DDS/blob/v2.9.1/src/cpp/rtps/reader/StatefulReader.cpp#L863
- https://www.debian.org/security/2023/dsa-5481