CVE-2026-35091

HIGH

8.2

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.

Details CVE

Score CVSS v3.18.2

SeveriteHIGH

Vecteur CVSSCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H

Vecteur d'attaqueNETWORK

ComplexiteLOW

Privileges requisNONE

Interaction utilisateurNONE

Publie4/1/2026

Derniere modification4/1/2026

Sourcenvd

Observations honeypot0

Faiblesses (CWE)

CWE-253

References

https://access.redhat.com/security/cve/CVE-2026-35091(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2453169(secalert@redhat.com)

https://bugzilla.redhat.com/show_bug.cgi?id=2453813(secalert@redhat.com)

Correlations IOC

Aucune correlation enregistree

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