High7.8Red Hat & Ubuntu Linux
Privilege escalation or denial of service in nf_tables via inverted element activity check
CVE-2026-23111 Published Feb 13, 2026
CVE-2026-23111
Affected products & platforms
Red Hat & Ubuntu LinuxUnclassified
Summary
Privilege escalation or denial of service in nf_tables via inverted element activity check. Red Hat rates this important (CVSS 7.8). Weakness: CWE-672. Affected package(s): kernel. Resolved in Red Hat advisory RHSA-2026:9112 — update the affected packages (`sudo dnf update`).
Affected versions
- kernel-0:6.12.0-55.70.1.el10_0
- kernel-0:5.14.0-570.108.1.el9_6
- kernel-0:6.12.0-211.7.1.el10_2
- kernel-0:5.14.0-427.121.1.el9_4
- kernel-0:5.14.0-611.47.1.el9_7
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Fixed versions
- RHSA-2026:9112
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
Mitigation checklist
Recommended fix / mitigation
- Update the affected package(s) to the fixed version shipped in RHSA-2026:9112 (`sudo dnf update` / `yum update`).
Official advisory · high-confidence parse· fetched 4 hours ago·verify at source
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