{"id":"CVE-2026-37457","details":"An off-by-one out-of-bounds write vulnerability in the bgp_flowspec_op_decode() function (bgpd/bgp_flowspec_util.c) of FRRouting (FRR) stable/10.0 allows attackers to cause a Denial of Service (DoS) via supplying a crafted FlowSpec component.","modified":"2026-06-09T18:29:51.120835329Z","published":"2026-05-01T00:00:00Z","related":["ALSA-2026:24340","SUSE-SU-2026:22026-1","openSUSE-SU-2026:10721-1","openSUSE-SU-2026:20898-1"],"database_specific":{"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37457.json","cna_assigner":"mitre"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/37xxx/CVE-2026-37457.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-37457"},{"type":"FIX","url":"https://github.com/FRRouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/frrouting/frr","events":[{"introduced":"0"},{"fixed":"0e6882bc72c0278988a47b2f0f73b7a91099a25c"}],"database_specific":{"source":"REFERENCES"}}],"versions":["base_10.6","frr-10.7.0-dev","base_10.5","frr-10.6.0-dev","frr-10.5-dev","base_10.4","base_10.3","frr-10.4-dev","frr-10.3-dev","base_10.2","frr-10.2-dev","base_10.1","frr-10.0-dev","base_10.0","frr-9.2-dev","base_9.1","base_9.0","frr-9.1-dev","base_8.5","frr-9.0-dev","frr-8.4-rc","base_8.4","frr-8.5-dev","base_8.3","frr-8.4-dev","base_8.2","frr-8.3-dev","frr-8.1-rc1","base_8.1","frr-8.2-dev","8.1-dev","frr-8.1-dev","base_8.0","base_7.6","frr-8.0-dev","frr-7.6-dev","base_7.5","base_7.4","frr-7.5-dev","base_7.3","frr-7.4-dev","base_7.2","frr-7.3-dev","frr-7.2-dev","7.1_pulled","frr-7.1-dev","frr-6.1-dev","frr-5.1-dev","reindent-master-after","reindent-master-before","frr-3.1-dev","frr-3.0-branchpoint"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-37457.json","vanir_signatures_modified":"2026-05-28T08:52:12Z","vanir_signatures":[{"id":"CVE-2026-37457-62a14b92","source":"https://github.com/frrouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c","target":{"file":"bgpd/bgp_flowspec_util.c"},"signature_version":"v1","digest":{"line_hashes":["70203518157991788059589249358584491773","339493298477160008444121123548945795090","220060263767998761351801902403723841861","138796088628398828774366363276051391257","323869506605232209770712306872727708856","240045892448241534760224328400224736540","205751541838883250232327288654861921512","89670831658012169823176879374640645846","299629851774576051021819406685035984563"],"threshold":0.9},"signature_type":"Line","deprecated":false},{"id":"CVE-2026-37457-6b966e94","source":"https://github.com/frrouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c","target":{"file":"bgpd/bgp_flowspec_util.c","function":"bgp_flowspec_op_decode"},"digest":{"function_hash":"311707315261189954997073606686648123025","length":1995},"signature_version":"v1","signature_type":"Function","deprecated":false},{"id":"CVE-2026-37457-fc0d213c","digest":{"function_hash":"223631915427432894996681863711670348562","length":2073},"target":{"file":"bgpd/bgp_flowspec_util.c","function":"bgp_flowspec_bitmask_decode"},"source":"https://github.com/frrouting/frr/commit/0e6882bc72c0278988a47b2f0f73b7a91099a25c","signature_version":"v1","signature_type":"Function","deprecated":false}]}}],"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"}]}