High7.5Vendor: MediumRed Hat Linux

High [CVE-2026-35092] Denial of Service via integer overflow in join message validation

This high-severity Red Hat Linux advisory covers CVE-2026-35092 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 7 Extended Lifecycle Support, Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support.

CVE-2026-35092 Published Apr 1, 2026

CVE-2026-35092

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Denial of Service via integer overflow in join message validation. Red Hat rates this moderate (CVSS 7.5).

Weakness: CWE-190. Affected package(s): corosync.

Resolved in Red Hat advisory RHSA-2026:19043 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 7 Extended Lifecycle Support; Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support; Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On; and 9 more.

Affected versions

corosync-0:3.1.9-1.el10_0.2
corosync-0:3.1.5-2.el8_6.1
corosync-0:3.1.5-3.el9_0.1
corosync-0:3.1.7-1.el9_2.1
corosync-0:3.1.9-2.el10_1.1
corosync-0:3.1.8-1.el9_4.1
corosync-0:2.4.5-7.el7_9.3
corosync-0:3.1.10-1.el9_8.1
corosync-0:3.1.8-1.el8_10.1
corosync-0:3.1.0-3.el8_4.2
corosync-0:3.1.7-1.el8_8.1
corosync-0:3.1.10-1.el10_2.1

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Fixed versions

RHSA-2026:19043

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

Mitigation checklist

Recommended fix / mitigation

Update the affected package(s) to the fixed version shipped in RHSA-2026:19043 (`sudo dnf update` / `yum update`).

Official advisory · high-confidence parse· fetched 2 months ago·verify at source

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