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Solution
No solution given by the vendor.
Workaround
Restrict network access to Corosync cluster communication ports. Configure firewall rules to limit incoming UDP traffic to the Corosync service (default port 5405) to only trusted hosts within the cluster. This will prevent unauthenticated remote attackers from sending crafted packets to exploit the vulnerability. A service restart may be required for firewall changes to take full effect.
Thu, 02 Apr 2026 00:15:00 +0000
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threat_severity
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threat_severity
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Wed, 01 Apr 2026 23:45:00 +0000
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| 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. | |
| Title | Corosync: corosync: denial of service via integer overflow in join message validation | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Weaknesses | CWE-190 | |
| CPEs | cpe:/a:redhat:openshift:4 cpe:/o:redhat:enterprise_linux:10 cpe:/o:redhat:enterprise_linux:7 cpe:/o:redhat:enterprise_linux:8 cpe:/o:redhat:enterprise_linux:9 |
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| Vendors & Products |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-04-01T13:32:35.483Z
Reserved: 2026-04-01T11:35:23.146Z
Link: CVE-2026-35092
Updated: 2026-04-01T13:30:10.667Z
Status : Undergoing Analysis
Published: 2026-04-01T14:16:57.237
Modified: 2026-04-01T14:23:37.727
Link: CVE-2026-35092
OpenCVE Enrichment
No data.