{"id":"USN-8170-1","summary":"corosync vulnerabilities","details":"It was discovered that Corosync incorrectly handled the membership commit\ntoken validity check. A remote attacker could use this issue to cause\nCorosync to crash, resulting in a denial of service, or to possibly obtain\na small quantity of sensitive information. (CVE-2026-35091)\n\nIt was discovered that Corosync incorrectly handled join message\nvalidation. A remote attacker could possibly use this issue to cause\nCorosync to crash, resulting in a denial of service. (CVE-2026-35092)","modified":"2026-04-27T18:47:50.132313Z","published":"2026-04-13T13:19:14Z","related":["UBUNTU-CVE-2026-35091","UBUNTU-CVE-2026-35092"],"upstream":["CVE-2026-35091","CVE-2026-35092","UBUNTU-CVE-2026-35091","UBUNTU-CVE-2026-35092"],"references":[{"type":"ADVISORY","url":"https://ubuntu.com/security/notices/USN-8170-1"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35091"},{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2026-35092"}],"affected":[{"package":{"name":"corosync","ecosystem":"Ubuntu:22.04:LTS","purl":"pkg:deb/ubuntu/corosync@3.1.6-1ubuntu1.2?arch=source&distro=jammy"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.6-1ubuntu1.2"}]}],"versions":["3.1.2-2ubuntu1","3.1.6-1ubuntu1","3.1.6-1ubuntu1.1"],"ecosystem_specific":{"binaries":[{"binary_name":"corosync","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"corosync-notifyd","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"corosync-vqsim","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libcfg7","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libcmap4","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libcorosync-common4","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libcpg4","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libquorum5","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libsam4","binary_version":"3.1.6-1ubuntu1.2"},{"binary_name":"libvotequorum8","binary_version":"3.1.6-1ubuntu1.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35091"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35092"}],"ecosystem":"Ubuntu:22.04:LTS"}}},{"package":{"name":"corosync","ecosystem":"Ubuntu:24.04:LTS","purl":"pkg:deb/ubuntu/corosync@3.1.7-1ubuntu3.2?arch=source&distro=noble"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.7-1ubuntu3.2"}]}],"versions":["3.1.7-1ubuntu1","3.1.7-1ubuntu2","3.1.7-1ubuntu3","3.1.7-1ubuntu3.1"],"ecosystem_specific":{"binaries":[{"binary_name":"corosync","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"corosync-notifyd","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"corosync-vqsim","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libcfg7","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libcmap4","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libcorosync-common4","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libcpg4","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libquorum5","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libsam4","binary_version":"3.1.7-1ubuntu3.2"},{"binary_name":"libvotequorum8","binary_version":"3.1.7-1ubuntu3.2"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35091"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35092"}],"ecosystem":"Ubuntu:24.04:LTS"}}},{"package":{"name":"corosync","ecosystem":"Ubuntu:25.10","purl":"pkg:deb/ubuntu/corosync@3.1.9-2ubuntu1.1?arch=source&distro=questing"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.1.9-2ubuntu1.1"}]}],"versions":["3.1.8-3ubuntu2","3.1.9-2ubuntu1"],"ecosystem_specific":{"binaries":[{"binary_name":"corosync","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"corosync-notifyd","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"corosync-vqsim","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libcfg7","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libcmap4","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libcorosync-common4","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libcpg4","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libquorum5","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libsam4","binary_version":"3.1.9-2ubuntu1.1"},{"binary_name":"libvotequorum8","binary_version":"3.1.9-2ubuntu1.1"}],"availability":"No subscription required"},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/usn/USN-8170-1.json","cves_map":{"cves":[{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35091"},{"severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"},{"type":"Ubuntu","score":"medium"}],"id":"CVE-2026-35092"}],"ecosystem":"Ubuntu:25.10"}}}],"schema_version":"1.7.5"}