High [CVE-2026-23156] Linux kernel: Information disclosure in efivarfs via incorrect error propagation
This high-severity Red Hat Linux advisory covers CVE-2026-23156 affecting Red Hat Enterprise Linux 1, Linux Kernel.
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Summary
Linux kernel: Information disclosure in efivarfs via incorrect error propagation. Red Hat rates this moderate (CVSS 7.3).
Weakness: CWE-390. Affected package(s): kernel.
Resolved in Red Hat advisory RHSA-2026:9095 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 1.
- kernel-0:6.12.0-55.69.1.el10_0
- kernel-0:6.12.0-124.43.1.el10_1
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
- RHSA-2026:9095
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:9095 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 2 months ago·verify at source
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