High [CVE-2026-46054] fix overlayfs mmap() and mprotect() access checks
This high-severity Red Hat Linux advisory covers CVE-2026-46054 affecting Red Hat Enterprise Linux 7, Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions, Red Hat Enterprise Linux 10.0 Extended Update Support.
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Summary
fix overlayfs mmap() and mprotect() access checks. Red Hat rates this important (CVSS 7).
Weakness: CWE-280. Affected package(s): kernel, kernel-rt.
Resolved in Red Hat advisory RHSA-2026:30848 — update the affected packages (`sudo dnf update`).
Affected products named by the advisory: Red Hat Enterprise Linux 7; Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions; Red Hat Enterprise Linux 10.0 Extended Update Support; Red Hat Enterprise Linux 8.8 Telecommunications Update Service; and 6 more.
- kernel-0:6.12.0-211.22.1.el10_2
- kernel-0:4.18.0-553.137.1.el8_10
- kernel-rt-0:4.18.0-553.137.1.rt7.478.el8_10
- kernel-0:5.14.0-687.19.1.el9_8
Official advisory · high-confidence parse· fetched 3 months ago·verify at source
- RHSA-2026:30848
Official advisory · high-confidence parse· fetched 3 months ago·verify at source
Mitigation checklist
- Update the affected package(s) to the fixed version shipped in RHSA-2026:30848 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 3 months ago·verify at source
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