CVE-2026-35092

high

Description

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 denial of service. This vulnerability specifically affects Corosync deployments configured to use totemudp/totemudpu mode.

References

https://bugzilla.redhat.com/show_bug.cgi?id=2453814

https://bugzilla.redhat.com/show_bug.cgi?id=2453169

https://access.redhat.com/security/cve/CVE-2026-35092

Details

Source: Mitre, NVD

Published: 2026-04-01

Updated: 2026-04-01

Risk Information

CVSS v2

Base Score: 7.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

Severity: High

CVSS v3

Base Score: 7.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Severity: High