CVE-2026-35091 (GCVE-0-2026-35091)

Vulnerability from cvelistv5 – Published: 2026-04-01 13:18 – Updated: 2026-04-06 07:32
VLAI?
Title
Corosync: corosync: denial of service and information disclosure via crafted udp packet
Summary
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.
Severity ?
8.2 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
CWE
  • CWE-253 - Incorrect Check of Function Return Value
Assigner
References
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
 Create a notification for this product.
Date Public ?
2026-04-01 11:48
Credits
Red Hat would like to thank Sebastián Alba Vives for reporting this issue.
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  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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