High7.0Red Hat & Ubuntu Linux
Fix peer runtime UAF during format-change stop
CVE-2026-46090 Published May 27, 2026
CVE-2026-46090
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Fix peer runtime UAF during format-change stop. Red Hat rates this important (CVSS 7). Weakness: CWE-364. Affected package(s): kernel, kernel-rt. Resolved in Red Hat advisory RHSA-2026:27354 — update the affected packages (`sudo dnf update`).
Affected versions
- kernel-0:3.10.0-1160.154.1.el7
- kernel-0:5.14.0-427.135.1.el9_4
- kernel-0:6.12.0-55.84.1.el10_0
- kernel-0:4.18.0-372.198.1.el8_6
- kernel-rt-0:5.14.0-284.178.1.rt14.463.el9_2
- kernel-0:6.12.0-211.29.1.el10_2
- kernel-0:4.18.0-477.150.1.el8_8
- kernel-0:5.14.0-687.19.1.el9_8
- kernel-0:5.14.0-570.125.1.el9_6
- kernel-rt-0:4.18.0-553.136.1.rt7.477.el8_10
- kernel-0:5.14.0-284.178.1.el9_2
- kernel-0:4.18.0-553.136.1.el8_10
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
Fixed versions
- RHSA-2026:27354
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-2026:27354 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 1 day ago·verify at source
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