{"id":"CVE-2025-64438","aliases":["DEBIAN-CVE-2025-64438","EUVD-2025-206668","UBUNTU-CVE-2025-64438"],"status":"published","title":"Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS","description":"Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). 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\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (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\nhe issue.","severity":{"version":"4.0","score":1.7,"vector":"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","level":"low","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.006,"percentile":0.49035,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-835"],"published":"2026-02-03T19:32:22Z","modified":"2026-10-28T11:00:24Z","affected":[{"source":"osv","ecosystem":"Debian:12","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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","2.11.2+ds-6.1~exp1","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","2.9.1+ds-1","2.9.1+ds-1+deb12u1","2.9.1+ds-1+deb12u2","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"]},{"source":"osv","ecosystem":"Debian:13","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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"]},{"source":"osv","ecosystem":"Ubuntu:Pro:22.04:LTS","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["2.1.0+ds-9","2.4.1+ds-1","2.5.0+ds-3","2.5.0+ds-3ubuntu0.1~esm1"]},{"source":"osv","ecosystem":"Ubuntu:24.04:LTS","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["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"]},{"source":"osv","ecosystem":"Ubuntu:25.10","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2+ds-1","3.1.2+ds-1build1"]},{"source":"osv","ecosystem":"Ubuntu:26.10","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.3.0+ds-3ubuntu1","3.3.0+ds-3ubuntu3"]},{"source":"osv","ecosystem":"Ubuntu:26.04:LTS","package":"fastdds","ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["3.1.2+ds-1build1","3.3.0+ds-3ubuntu1"]}],"products":[{"vendor":"eprosima","product":"fast-dds"},{"vendor":"eprosima","product":"fast_dds"}],"references":[{"url":"https://security-tracker.debian.org/tracker/CVE-2025-64438","tags":["Third Party Advisory","web","advisory"]},{"url":"https://github.com/eProsima/Fast-DDS/commit/0b0cb308eaeeb2175694aa0a0a723106824ce9a7","tags":["Patch","fix","report"]},{"url":"https://github.com/eProsima/Fast-DDS/commit/71da01b4aea4d937558984f2cf0089f5ba3c871f","tags":["Patch","fix"]},{"url":"https://github.com/eProsima/Fast-DDS/commit/8ca016134dac20b6e30e42b7b73466ef7cdbc213","tags":["Patch","fix"]},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/64xxx/CVE-2025-64438.json","tags":["advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-64438","tags":["advisory"]},{"url":"https://github.com/eProsima/Fast-DDS","tags":["package"]},{"url":"https://ubuntu.com/security/CVE-2025-64438","tags":["report"]},{"url":"https://www.cve.org/CVERecord?id=CVE-2025-64438","tags":["report"]}],"sources":{"cve":[{"id":"CVE-2025-64438","title":"Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS","description":"Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). 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\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (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\nhe issue.","status":"published","published":"2026-02-03T19:32:22.265Z","modified":"2026-02-03T20:30:50.31Z","cvss":[{"version":"4.0","score":1.7,"vector":"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","level":"low","assessor":"cna"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:32:47.08757Z"}],"euvd":[{"id":"EUVD-2025-206668","description":"Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). 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\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (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\nhe issue.","status":"published","published":"2026-02-03T19:32:22Z","modified":"2026-02-03T20:30:50Z","cvss":[{"version":"4.0","score":1.7,"vector":"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","level":"low"}],"updated_at":"2026-11-02T19:48:44.612436Z"}],"nvd":[{"id":"CVE-2025-64438","description":"Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). 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\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (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\nhe issue.","status":"published","published":"2026-02-03T20:15:57.28Z","modified":"2026-06-17T09:54:23.157Z","cvss":[{"version":"4.0","score":1.7,"vector":"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/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"low","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"primary"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T14:11:59.832225Z"}],"osv":[{"id":"CVE-2025-64438","title":"Fast-DDS: Unbounded GAP range triggers OOM DoS under RELIABLE QoS","description":"Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group\n). 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\n-DDS when processing RTPS GAP submessages under RELIABLE QoS. By sending a tiny GAP packet with a huge gap range (`gapList\n.base - gapStart`), an attacker drives `StatefulReader::processGapMsg()` into an unbounded loop that inserts millions of s\nequence numbers into `WriterProxy::changes_received_` (`std::set`), causing multi-GB heap growth and process termination. \nNo authentication is required beyond network reachability to the reader on the DDS domain. In environments without an RSS \nlimit (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\nhe issue.","status":"published","published":"2026-02-03T19:32:22.265Z","modified":"2026-10-28T11:00:24.572250368Z","cvss":[{"version":"4.0","score":1.7,"vector":"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","level":"low"}],"cwes":["CWE-835"],"updated_at":"2026-11-02T15:44:51.851511Z"},{"id":"DEBIAN-CVE-2025-64438","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.","status":"published","published":"2026-02-03T20:15:57.28Z","modified":"2026-09-01T20:05:55.658792525Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T15:45:47.697959Z"},{"id":"UBUNTU-CVE-2025-64438","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.","status":"published","published":"2026-02-03T20:15:00Z","modified":"2026-10-17T12:57:11.140298044Z","cvss":[{"version":"4.0","score":1.7,"vector":"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","level":"low"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"updated_at":"2026-11-02T16:55:52.345622Z"}]}}