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-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.
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History
Thu, 02 Apr 2026 00:15:00 +0000
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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. 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. | |
| Title | Corosync: corosync: denial of service and information disclosure via crafted udp packet | |
| First Time appeared |
Redhat
Redhat enterprise Linux Redhat openshift |
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| Weaknesses | CWE-253 | |
| 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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Redhat
Redhat enterprise Linux Redhat openshift |
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cvssV3_1
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Status: PUBLISHED
Assigner: redhat
Published:
Updated: 2026-04-01T20:29:55.615Z
Reserved: 2026-04-01T11:35:23.145Z
Link: CVE-2026-35091
Updated: 2026-04-01T20:29:29.178Z
Status : Undergoing Analysis
Published: 2026-04-01T14:16:57.040
Modified: 2026-04-01T14:23:37.727
Link: CVE-2026-35091
OpenCVE Enrichment
No data.