CVE-2026-35091

Corosync: corosync: denial of service and information disclosure via crafted udp packet

HIGH 8.2

En bref

Source: NVD
EPSS: EPSS 0.87 % · centile 59 (2026-10-28)
État: PUBLISHED
Publiée: 2026-04-01 13:18 UTC
Mise à jour: 2026-08-21 12:15 UTC
Attribuée par: redhat
Statut NVD: Modified

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

Faiblesses (CWE)

CWE-253 — Incorrect Check of Function Return Value

Références

Scores

Version	Score	Vecteur	Évalué par
CVSS 3.1	HIGH 8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H	redhat
CVSS 3.1	HIGH 8.2	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H	NVD · secalert@redhat.com (Secondary)

Références européennes

ENISA EUVD · EUVD-2026-17879
GCVE · GCVE-0-2026-35091

Avis du CERT-FR

CERTFR-2026-AVI-1165 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr
CERTFR-2026-AVI-1032 — Multiples vulnérabilités dans les produits IBM · cert.ssi.gouv.fr

Configurations affectées (CPE NVD)

cpe:2.3:a:corosync:corosync:-:*:*:*:*:*:*:*
cpe:2.3:a:redhat:openshift:4.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:7.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:8.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:9.0:*:*:*:*:*:*:*
cpe:2.3:o:redhat:enterprise_linux:10.0:*:*:*:*:*:*:*

Produits affectés

Produit	Versions
Red Hat · Red Hat Enterprise Linux 10	unaffected 0:3.1.9-2.el10_1.1 < *
Red Hat · Red Hat Enterprise Linux 10	unaffected 0:3.1.10-1.el10_2.1 < *
Red Hat · Red Hat Enterprise Linux 10.0 Extended Update Support	unaffected 0:3.1.9-1.el10_0.2 < *
Red Hat · Red Hat Enterprise Linux 7 Extended Lifecycle Support	unaffected 0:2.4.5-7.el7_9.3 < *
Red Hat · Red Hat Enterprise Linux 8	unaffected 0:3.1.8-1.el8_10.1 < *
Red Hat · Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support	unaffected 0:3.1.0-3.el8_4.2 < *
Red Hat · Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On	unaffected 0:3.1.0-3.el8_4.2 < *
Red Hat · Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support	unaffected 0:3.1.5-2.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Telecommunications Update Service	unaffected 0:3.1.5-2.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.6 Update Services for SAP Solutions	unaffected 0:3.1.5-2.el8_6.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Telecommunications Update Service	unaffected 0:3.1.7-1.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions	unaffected 0:3.1.7-1.el8_8.1 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:3.1.9-2.el9_7.1 < *
Red Hat · Red Hat Enterprise Linux 9	unaffected 0:3.1.10-1.el9_8.1 < *
Red Hat · Red Hat Enterprise Linux 9.0 Update Services for SAP Solutions	unaffected 0:3.1.5-3.el9_0.1 < *
Red Hat · Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions	unaffected 0:3.1.7-1.el9_2.1 < *
Red Hat · Red Hat Enterprise Linux 9.4 Extended Update Support	unaffected 0:3.1.8-1.el9_4.1 < *
Red Hat · Red Hat Enterprise Linux 9.6 Extended Update Support	unaffected 0:3.1.9-2.el9_6.1 < *
Red Hat · Red Hat OpenShift Container Platform 4

Sources

Source	Licence
CVE List (CVEProject cvelistV5)	CVE Program Terms of Use
EPSS (FIRST.org)	FIRST — attribution requested
ENISA EUVD	ENISA — reproduction authorised, source acknowledged
CERT-FR (ANSSI)	Licence Ouverte / Etalab 2.0
NVD (NIST) via fkie-cad/nvd-json-data-feeds	Public domain — this product uses data from the NVD API but is not endorsed or certified by the NVD