{"id":"USN-8376-1","summary":"frr vulnerabilities","details":"It was discovered that FRR incorrectly handled certain OSPF Traffic\nEngineering and Segment Routing TLVs. An attacker could possibly use this\nissue to cause FRR to crash, resulting in a denial of service.\n(CVE-2026-28532)\n\nIt was discovered that FRR incorrectly handled certain BGP FlowSpec\ncomponents. An attacker could possibly use this issue to cause FRR to\ncrash, resulting in a denial of service. (CVE-2026-37457)\n\nIt was discovered that FRR did not properly validate certain MP_REACH_NLRI\nmessages. An authenticated user could possibly use this issue to cause FRR\nto crash, resulting in a denial of service. (CVE-2026-37458)\n\nIt was discovered that FRR incorrectly handled processing certain BGP\nUPDATE messages. An attacker could possibly use this issue to cause FRR to\ncrash, resulting in a denial of service. This issue only affected Ubuntu\n25.04 and Ubuntu 25.10. (CVE-2026-37459)","modified":"2026-06-03T22:18:07.532703186Z","published":"2026-06-03T13:15:15Z","related":["UBUNTU-CVE-2026-28532","UBUNTU-CVE-2026-37457","UBUNTU-CVE-2026-37458","UBUNTU-CVE-2026-37459"],"upstream":["CVE-2026-28532","CVE-2026-37457","CVE-2026-37458","CVE-2026-37459","UBUNTU-CVE-2026-28532","UBUNTU-CVE-2026-37457","UBUNTU-CVE-2026-37458","UBUNTU-CVE-2026-37459"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8376-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-28532"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-37457"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-37458"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-37459"}],"affected":[{"package":{"name":"frr","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/frr?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.1-1ubuntu1.16"}]}],"versions":["7.5.1-1.1","8.1-1","8.1-1ubuntu1","8.1-1ubuntu1.1","8.1-1ubuntu1.2","8.1-1ubuntu1.3","8.1-1ubuntu1.4","8.1-1ubuntu1.5","8.1-1ubuntu1.6","8.1-1ubuntu1.7","8.1-1ubuntu1.8","8.1-1ubuntu1.9","8.1-1ubuntu1.10","8.1-1ubuntu1.11","8.1-1ubuntu1.13","8.1-1ubuntu1.14","8.1-1ubuntu1.15"],"ecosystem_specific":{"availability":"No subscription required","binaries":[{"binary_version":"8.1-1ubuntu1.16","binary_name":"frr"},{"binary_version":"8.1-1ubuntu1.16","binary_name":"frr-pythontools"},{"binary_version":"8.1-1ubuntu1.16","binary_name":"frr-rpki-rtrlib"},{"binary_version":"8.1-1ubuntu1.16","binary_name":"frr-snmp"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8376-1.json","cves_map":{"ecosystem":"Ubuntu:22.04:LTS","cves":[{"id":"CVE-2026-28532","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-37457","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-37458","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}},{"package":{"name":"frr","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/frr?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"8.4.4-1.1ubuntu6.7"}]}],"versions":["8.4.4-1.1ubuntu1","8.4.4-1.1ubuntu3","8.4.4-1.1ubuntu4","8.4.4-1.1ubuntu5","8.4.4-1.1ubuntu6","8.4.4-1.1ubuntu6.1","8.4.4-1.1ubuntu6.2","8.4.4-1.1ubuntu6.3","8.4.4-1.1ubuntu6.4","8.4.4-1.1ubuntu6.5","8.4.4-1.1ubuntu6.6"],"ecosystem_specific":{"availability":"No 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required","binaries":[{"binary_name":"frr","binary_version":"8.4.4-1.1ubuntu6.7"},{"binary_version":"8.4.4-1.1ubuntu6.7","binary_name":"frr-pythontools"},{"binary_version":"8.4.4-1.1ubuntu6.7","binary_name":"frr-rpki-rtrlib"},{"binary_name":"frr-snmp","binary_version":"8.4.4-1.1ubuntu6.7"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8376-1.json","cves_map":{"ecosystem":"Ubuntu:24.04:LTS","cves":[{"id":"CVE-2026-28532","severity":[{"score":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","type":"CVSS_V4"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-37457","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]},{"id":"CVE-2026-37458","severity":[{"score":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","type":"CVSS_V3"},{"score":"medium","type":"Ubuntu"}]}]}}},{"package":{"name":"frr","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/frr?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"10.4.1-3ubuntu1.4"}]}],"versions":["10.2.1-1ubuntu3","10.3-3ubuntu2","10.4.1-3ubuntu1","10.4.1-3ubuntu1.1","10.4.1-3ubuntu1.2","10.4.1-3ubuntu1.3"],"ecosystem_specific":{"availability":"No 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