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Medium5.9Red Hat Linux

Medium [CVE-2026-34043] Denial of Service via specially crafted array-like object serialization

This medium-severity Red Hat Linux advisory covers CVE-2026-34043 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8.

CVE-2026-34043 Published Mar 31, 2026
CVE-2026-34043
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Denial of Service via specially crafted array-like object serialization. Red Hat rates this moderate (CVSS 5.9).

Weakness: CWE-835. Affected package(s): openshift4/ose-networking-console-plugin-rhel9:1778256287, dotnet8.0, openshift4/ose-networking-console-plugin-rhel9:1778644858, openshift4/ose-networking-console-plugin-rhel9:1779256322, openshift4/ose-networking-console-plugin-rhel9:1782211435, openshift4/ose-networking-console-plugin-rhel9:1778532500.

Resolved in Red Hat advisory RHSA-2026:21291 — update the affected packages (`sudo dnf update`).

Affected products named by the advisory: Red Hat Enterprise Linux 9; Red Hat Enterprise Linux 1; Red Hat Enterprise Linux 8.

Affected versions
  • openshift4/ose-networking-console-plugin-rhel9:1778256287
  • dotnet8.0-0:8.0.127-1.el9_8
  • dotnet8.0-0:8.0.127-1.el10_0
  • openshift4/ose-networking-console-plugin-rhel9:1778644858
  • dotnet8.0-0:8.0.127-1.el10_2
  • dotnet8.0-0:8.0.127-1.el8_10
  • dotnet8.0-0:8.0.127-1.el9_4
  • openshift4/ose-networking-console-plugin-rhel9:1779256322
  • dotnet8.0-0:8.0.127-1.el9_6
  • openshift4/ose-networking-console-plugin-rhel9:1782211435
  • openshift4/ose-networking-console-plugin-rhel9:1778532500

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

Fixed versions
  • RHSA-2026:21291

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-2026:21291 (`sudo dnf update` / `yum update`).

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

Discussion(0)

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