High7.5Red Hat Linux

High [CVE-2026-37457] denial of service via crafted FlowSpec component

This high-severity Red Hat Linux advisory covers CVE-2026-37457 affecting Red Hat Enterprise Linux 10, Red Hat Enterprise Linux 8, Red Hat Enterprise Linux 9.

CVE-2026-37457 Published May 1, 2026

CVE-2026-37457

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

denial of service via crafted FlowSpec component. Red Hat rates this important (CVSS 7.5).

Weakness: CWE-787. Affected package(s): frr, frr10.

Resolved in Red Hat advisory RHSA-2026:24340 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 10; Red Hat Enterprise Linux 8; Red Hat Enterprise Linux 9.

Affected versions

frr-0:8.5.3-13.el9_8
frr10-0:10.4.3-3.el9_8
frr-0:7.5.1-24.el8_10
frr-0:10.4.4-1.el10_2

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

Fixed versions

RHSA-2026:24340

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-2026:24340 (`sudo dnf update` / `yum update`).

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

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