{"id":"CVE-2025-29908","summary":"Netty QUIC hash collision DoS attack","details":"Netty QUIC codec is a QUIC codec for netty which makes use of quiche. An issue was discovered in the codec. A hash collision vulnerability (in the hash map used to manage connections) allows remote attackers to cause a considerable CPU load on the server (a Hash DoS attack) by initiating connections with colliding Source Connection IDs (SCIDs). This vulnerability is fixed in 0.0.71.Final.","aliases":["GHSA-hqqc-jr88-p6x2"],"modified":"2026-04-02T12:46:31.942658Z","published":"2025-03-31T18:43:44.172Z","database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/29xxx/CVE-2025-29908.json","cna_assigner":"GitHub_M","cwe_ids":["CWE-407"]},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/29xxx/CVE-2025-29908.json"},{"type":"ADVISORY","url":"https://github.com/netty/netty-incubator-codec-quic/security/advisories/GHSA-hqqc-jr88-p6x2"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-29908"},{"type":"FIX","url":"https://github.com/netty/netty-incubator-codec-quic/commit/e059bd9b78723f8b035e0c547e42ce263f03461c"},{"type":"PACKAGE","url":"https://github.com/ncc-pbottine/QUIC-Hash-Dos-Advisory"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/netty/netty-incubator-codec-quic","events":[{"introduced":"0"},{"fixed":"1a4b5dcff57f69cfbe987ea861bca66b2ad6bf96"}]}],"versions":["netty-incubator-codec-parent-quic-0.0.21.Final","netty-incubator-codec-parent-quic-0.0.22.Final","netty-incubator-codec-parent-quic-0.0.23.Final","netty-incubator-codec-parent-quic-0.0.24.Final","netty-incubator-codec-parent-quic-0.0.25.Final","netty-incubator-codec-parent-quic-0.0.26.Final","netty-incubator-codec-parent-quic-0.0.27.Final","netty-incubator-codec-parent-quic-0.0.28.Final","netty-incubator-codec-parent-quic-0.0.29.Final","netty-incubator-codec-parent-quic-0.0.30.Final","netty-incubator-codec-parent-quic-0.0.31.Final","netty-incubator-codec-parent-quic-0.0.32.Final","netty-incubator-codec-parent-quic-0.0.33.Final","netty-incubator-codec-parent-quic-0.0.34.Final","netty-incubator-codec-parent-quic-0.0.35.Final","netty-incubator-codec-parent-quic-0.0.36.Final","netty-incubator-codec-parent-quic-0.0.37.Final","netty-incubator-codec-parent-quic-0.0.38.Final","netty-incubator-codec-parent-quic-0.0.39.Final","netty-incubator-codec-parent-quic-0.0.40.Final","netty-incubator-codec-parent-quic-0.0.41.Final","netty-incubator-codec-parent-quic-0.0.42.Final","netty-incubator-codec-parent-quic-0.0.43.Final","netty-incubator-codec-parent-quic-0.0.44.Final","netty-incubator-codec-parent-quic-0.0.45.Final","netty-incubator-codec-parent-quic-0.0.46.Final","netty-incubator-codec-parent-quic-0.0.47.Final","netty-incubator-codec-parent-quic-0.0.48.Final","netty-incubator-codec-parent-quic-0.0.49.Final","netty-incubator-codec-parent-quic-0.0.50.Final","netty-incubator-codec-parent-quic-0.0.51.Final","netty-incubator-codec-parent-quic-0.0.52.Final","netty-incubator-codec-parent-quic-0.0.53.Final","netty-incubator-codec-parent-quic-0.0.54.Final","netty-incubator-codec-parent-quic-0.0.55.Final","netty-incubator-codec-parent-quic-0.0.56.Final","netty-incubator-codec-parent-quic-0.0.57.Final","netty-incubator-codec-parent-quic-0.0.58.Final","netty-incubator-codec-parent-quic-0.0.59.Final","netty-incubator-codec-parent-quic-0.0.60.Final","netty-incubator-codec-parent-quic-0.0.61.Final","netty-incubator-codec-parent-quic-0.0.62.Final","netty-incubator-codec-parent-quic-0.0.63.Final","netty-incubator-codec-parent-quic-0.0.64.Final","netty-incubator-codec-parent-quic-0.0.65.Final","netty-incubator-codec-parent-quic-0.0.66.Final","netty-incubator-codec-parent-quic-0.0.67.Final","netty-incubator-codec-parent-quic-0.0.68.Final","netty-incubator-codec-parent-quic-0.0.69.Final","netty-incubator-codec-parent-quic-0.0.70.Final","netty-incubator-codec-quic-0.0.1.Final","netty-incubator-codec-quic-0.0.10.Final","netty-incubator-codec-quic-0.0.11.Final","netty-incubator-codec-quic-0.0.12.Final","netty-incubator-codec-quic-0.0.13.Final","netty-incubator-codec-quic-0.0.14.Final","netty-incubator-codec-quic-0.0.15.Final","netty-incubator-codec-quic-0.0.16.Final","netty-incubator-codec-quic-0.0.17.Final","netty-incubator-codec-quic-0.0.18.Final","netty-incubator-codec-quic-0.0.19.Final","netty-incubator-codec-quic-0.0.2.Final","netty-incubator-codec-quic-0.0.20.Final","netty-incubator-codec-quic-0.0.3.Final","netty-incubator-codec-quic-0.0.4.Final","netty-incubator-codec-quic-0.0.5.Final","netty-incubator-codec-quic-0.0.6.Final","netty-incubator-codec-quic-0.0.7.Final","netty-incubator-codec-quic-0.0.8.Final","netty-incubator-codec-quic-0.0.9.Final"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-29908.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L"}]}