high7.5
CVE-2026-35092
A flaw was found in Corosync.
Impact
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.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Corosync | Corosync | All versions |
| Redhat | Openshift | Version 4.0 |
| Redhat | Enterprise Linux | Versions 7.0, 8.0, 9.0, 10.0 |
Weakness classification
References
- NVD record
- CVE.org record
- https://access.redhat.com/errata/RHSA-2026:13644
- https://access.redhat.com/errata/RHSA-2026:13657
- https://access.redhat.com/errata/RHSA-2026:13673
- https://access.redhat.com/errata/RHSA-2026:14205
- https://access.redhat.com/errata/RHSA-2026:14210
- https://access.redhat.com/errata/RHSA-2026:14211
- https://access.redhat.com/errata/RHSA-2026:14212
- https://access.redhat.com/errata/RHSA-2026:14213
- https://access.redhat.com/errata/RHSA-2026:14214
- https://access.redhat.com/errata/RHSA-2026:14215
- https://access.redhat.com/errata/RHSA-2026:14216
- https://access.redhat.com/errata/RHSA-2026:19043
- https://access.redhat.com/errata/RHSA-2026:19200
- https://access.redhat.com/errata/RHSA-2026:20916
- https://access.redhat.com/security/cve/CVE-2026-35092
- https://bugzilla.redhat.com/show_bug.cgi?id=2453169
- https://bugzilla.redhat.com/show_bug.cgi?id=2453814