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Medium5.3Red Hat Linux

Medium [CVE-2026-4046] Denial of Service via iconv() function with specific character sets

This medium-severity Red Hat Linux advisory covers CVE-2026-4046 affecting Red Hat Enterprise Linux 9, Red Hat Enterprise Linux 1, Red Hat Enterprise Linux 8.

CVE-2026-4046 Published Mar 30, 2026
CVE-2026-4046
Affected products & platforms
Red Hat LinuxUnclassified
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Summary

Denial of Service via iconv() function with specific character sets. Red Hat rates this moderate (CVSS 5.3).

Weakness: CWE-617. Affected package(s): rhui5/haproxy-rhel9:1781525671, insights-proxy/insights-proxy-container-rhel9:1780420428, glibc, rhui5/installer-rhel9:1781525693, costmanagement/costmanagement-metrics-rhel9-operator:1780946239, rhui5/cds-rhel9:1781525684.

Resolved in Red Hat advisory RHSA-2026:29197 — 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
  • rhui5/haproxy-rhel9:1781525671
  • insights-proxy/insights-proxy-container-rhel9:1780420428
  • glibc-0:2.34-270.el9_8
  • glibc-0:2.39-124.el10_2
  • rhui5/installer-rhel9:1781525693
  • glibc-0:2.28-251.el8_10.37
  • costmanagement/costmanagement-metrics-rhel9-operator:1780946239
  • rhui5/cds-rhel9:1781525684
  • discovery/discovery-ui-rhel9:1782166952
  • discovery/discovery-server-rhel9:1782159791
  • glibc-main-2.42-12.hum1
  • rhui5/rhua-rhel9:1781525739

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

Fixed versions
  • RHSA-2026:29197

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-2026:29197 (`sudo dnf update` / `yum update`).

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

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