Low3.7Red Hat Linux

Low [CVE-2026-5419] Information disclosure via timing side-channel in PKCS#7 padding removal

This low-severity Red Hat Linux advisory covers CVE-2026-5419 affecting Red Hat Enterprise Linux 10.0 Extended Update Support, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 9.6 Extended Update Support.

CVE-2026-5419 Published Apr 29, 2026

CVE-2026-5419

Affected products & platforms

Red Hat LinuxUnclassified

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Summary

Information disclosure via timing side-channel in PKCS#7 padding removal. Red Hat rates this low (CVSS 3.7).

Weakness: CWE-208. Affected package(s): rhui5/haproxy-rhel9:1781525671, gnutls, rhui5/installer-rhel9:1781525693, rhui5/cds-rhel9:1781525684, discovery/discovery-ui-rhel9:1782166952, discovery/discovery-server-rhel9:1782159791.

Resolved in Red Hat advisory RHSA-2026:20613 — 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 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 9.6 Extended Update Support; Red Hat Discovery 2; and 4 more.

Affected versions

rhui5/haproxy-rhel9:1781525671
gnutls-0:3.8.9-9.el10_0.19
gnutls-0:3.8.10-4.el9_8
rhui5/installer-rhel9:1781525693
gnutls-0:3.8.10-4.el10_2
rhui5/cds-rhel9:1781525684
discovery/discovery-ui-rhel9:1782166952
gnutls-0:3.8.3-4.el9_4.6
discovery/discovery-server-rhel9:1782159791
gnutls-0:3.8.3-6.el9_6.4
rhui5/rhua-rhel9:1781525739

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

Fixed versions

RHSA-2026:20613

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-2026:20613 (`sudo dnf update` / `yum update`).

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

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