High7.0Red Hat & Ubuntu Linux
fix overlayfs mmap() and mprotect() access checks
CVE-2026-46054 Published May 27, 2026
CVE-2026-46054
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
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 versions
- 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 1 day ago·verify at source
Fixed versions
- RHSA-2026:30848
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- 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 1 day ago·verify at source
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