{"id":"CVE-2023-41909","details":"An issue was discovered in FRRouting FRR through 9.0. bgp_nlri_parse_flowspec in bgpd/bgp_flowspec.c processes malformed requests with no attributes, leading to a NULL pointer dereference.","modified":"2026-04-02T09:21:22.857319Z","published":"2023-09-05T07:15:14.877Z","related":["ALSA-2024:2156","ALSA-2024:2981","SUSE-SU-2023:3709-1","SUSE-SU-2023:3762-1","SUSE-SU-2024:4090-1","openSUSE-SU-2024:13238-1"],"references":[{"type":"ADVISORY","url":"https://lists.debian.org/debian-lts-announce/2023/09/msg00020.html"},{"type":"FIX","url":"https://github.com/FRRouting/frr/pull/13222/commits/cfd04dcb3e689754a72507d086ba3b9709fc5ed8"},{"type":"ARTICLE","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LMJNX44SMJM25JZO7XWHDQCOB4SNJPIE/"},{"type":"ARTICLE","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/WXR6PIVY4SWO7HDT4EY733H4X32SCPM4/"},{"type":"ARTICLE","url":"https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/JLG64IF3FU7V76K4TKCCXVNEE6P2VUDO/"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/frrouting/frr","events":[{"introduced":"0"},{"last_affected":"16c38045b1a84f899da473398779cc593d82d2bd"},{"introduced":"0"},{"last_affected":"d5bec7b08149e9811013ba771ae6d557b396b380"}],"database_specific":{"versions":[{"introduced":"0"},{"last_affected":"9.0"},{"introduced":"0"},{"last_affected":"10.0"}]}}],"versions":["7.1_pulled","8.0-dev","8.1-dev","FRR-3.0.1","base_7.2","base_7.3","base_7.4","base_7.5","base_7.6","base_8.0","base_8.1","base_8.2","base_8.3","base_8.4","base_8.5","debian/frr-6.0.2-1","debian/frr-6.0.2-2","debian/frr-6.0.3-1","debian/frr-8.4.1-1","debian/frr-8.4.1-2","debian/frr-8.4.2-1","debian/frr-8.4.4-1","docker/7.5.0","docker/7.5.1","docker/8.1.0","docker/8.2.0","docker/8.2.1","docker/8.2.2","docker/8.3.0","docker/8.3.1","docker/8.4.0","docker/8.4.1","docker/8.4.2","docker/8.4.5","docker/8.4.6","docker/8.4.7","docker/8.5.1","docker/8.5.2","docker/8.5.3","docker/8.5.4","docker/8.5.5","docker/8.5.6","docker/8.5.7","frr-2.0","frr-2.0-rc1","frr-2.0-rc2","frr-2.0.1","frr-2.0.2","frr-3.0","frr-3.0-branchpoint","frr-3.0-rc0","frr-3.0-rc1","frr-3.0-rc2","frr-3.0-rc3","frr-3.0.2","frr-3.0.3","frr-3.0.4","frr-3.1-dev","frr-4.0","frr-4.0-dev","frr-4.0.1","frr-5.0","frr-5.0-dev","frr-5.0.1","frr-5.0.2","frr-5.1-dev","frr-6.0","frr-6.0.1","frr-6.0.2","frr-6.0.3","frr-6.1-dev","frr-7.0","frr-7.0.1","frr-7.1","frr-7.1-dev","frr-7.2","frr-7.2-dev","frr-7.2.1","frr-7.3","frr-7.3-dev","frr-7.3.1","frr-7.4","frr-7.4-dev","frr-7.5","frr-7.5-dev","frr-7.5.1","frr-7.6-dev","frr-8.0","frr-8.0-dev","frr-8.0.1","frr-8.1","frr-8.1-dev","frr-8.1-rc1","frr-8.1-rc2","frr-8.2","frr-8.2-dev","frr-8.2-rc","frr-8.2.1","frr-8.2.1.rc","frr-8.2.2","frr-8.2.2.rc","frr-8.3","frr-8.3-dev","frr-8.3-rc","frr-8.3.1","frr-8.3.2","frr-8.4","frr-8.4-dev","frr-8.4-rc","frr-8.4.1","frr-8.4.2","frr-8.4.3","frr-8.4.4","frr-8.4.5","frr-8.4.6","frr-8.4.7","frr-8.5","frr-8.5-dev","frr-8.5-rc","frr-8.5.1","frr-8.5.2","frr-8.5.3","frr-8.5.4","frr-8.5.5","frr-8.5.6","frr-8.5.7","frr-9.0-dev","pim6-testing-20220430","reindent-3.0-after","reindent-3.0-before","reindent-master-after","reindent-master-before"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2023-41909.json","unresolved_ranges":[{"events":[{"introduced":"0"},{"last_affected":"37"}]},{"events":[{"introduced":"0"},{"last_affected":"38"}]},{"events":[{"introduced":"0"},{"last_affected":"39"}]}]}}],"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:H"}]}