{"id":"OESA-2026-1964","summary":"corosync security update","details":"This package contains the Corosync Cluster Engine Executive, several default APIs and libraries, default configuration files, and an init script.\r\n\r\nSecurity Fix(es):\n\nA flaw was found in Corosync. A remote unauthenticated attacker can exploit a wrong return value vulnerability in the Corosync membership commit token sanity check by sending a specially crafted User Datagram Protocol (UDP) packet. This can lead to an out-of-bounds read, causing a denial of service (DoS) and potentially disclosing limited memory contents. This vulnerability affects Corosync when running in totemudp/totemudpu mode, which is the default configuration.(CVE-2026-35091)\n\nA flaw was found in Corosync. An integer overflow vulnerability in Corosync's join message sanity validation allows a remote, unauthenticated attacker to send crafted User Datagram Protocol (UDP) packets. This can cause the service to crash, leading to a denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.(CVE-2026-35092)","modified":"2026-08-18T01:19:39.220071674Z","published":"2026-04-17T11:10:58Z","upstream":["CVE-2026-35091","CVE-2026-35092"],"database_specific":{"severity":"High"},"references":[{"type":"ADVISORY","url":"https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1964"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35091"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-35092"}],"affected":[{"package":{"name":"corosync","ecosystem":"openEuler:20.03-LTS-SP4","purl":"pkg:rpm/openEuler/corosync&distro=openEuler-20.03-LTS-SP4"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"3.0.2-7.oe2003sp4"}]}],"ecosystem_specific":{"src":["corosync-3.0.2-7.oe2003sp4.src.rpm"],"x86_64":["corosync-3.0.2-7.oe2003sp4.x86_64.rpm","corosync-debuginfo-3.0.2-7.oe2003sp4.x86_64.rpm","corosync-debugsource-3.0.2-7.oe2003sp4.x86_64.rpm","corosync-vqsim-3.0.2-7.oe2003sp4.x86_64.rpm","corosynclib-3.0.2-7.oe2003sp4.x86_64.rpm","corosynclib-devel-3.0.2-7.oe2003sp4.x86_64.rpm","spausedd-3.0.2-7.oe2003sp4.x86_64.rpm"],"aarch64":["corosync-3.0.2-7.oe2003sp4.aarch64.rpm","corosync-debuginfo-3.0.2-7.oe2003sp4.aarch64.rpm","corosync-debugsource-3.0.2-7.oe2003sp4.aarch64.rpm","corosync-vqsim-3.0.2-7.oe2003sp4.aarch64.rpm","corosynclib-3.0.2-7.oe2003sp4.aarch64.rpm","corosynclib-devel-3.0.2-7.oe2003sp4.aarch64.rpm","spausedd-3.0.2-7.oe2003sp4.aarch64.rpm"]},"database_specific":{"source":"https://repo.openeuler.org/security/data/osv/OESA-2026-1964.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H"}]}