Summary
The corosync packages provide the Corosync Cluster Engine and C APIs for AlmaLinux cluster software.
Security Fix(es):
* corosync: Corosync: Denial of Service and information disclosure via crafted UDP packet (CVE-2026-35091)
* corosync: Corosync: Denial of Service via integer overflow in join message validation (CVE-2026-35092)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 4
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 10 | corosync | 3.1.9-2.el10_1.1 |
| AlmaLinux · 10 | corosync-vqsim | 3.1.9-2.el10_1.1 |
| AlmaLinux · 10 | corosynclib | 3.1.9-2.el10_1.1 |
| AlmaLinux · 10 | corosynclib-devel | 3.1.9-2.el10_1.1 |
Vulnerabilities 2
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High 8.2
Corosync: corosync: denial of service and information disclosure via crafted udp packet
A 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-…
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High 7.5
Corosync: corosync: denial of service via integer overflow in join message validation
A 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 deni…