Back to vendor advisories
Ubuntu Security NoticesUSN-9027-1

USN-9027-1: Linux kernel vulnerabilities

Severity not listed 5 CVEs Published Nov 10, 2026 at 8:45 AM UTC

Summary

Several security issues were discovered in the Linux kernel. An attacker could possibly use these to compromise the system. This update corrects flaws in the following subsystems:

- x86 architecture;

- Hardware monitoring drivers;

- OCFS2 file system;

- IPv4 networking;

- Ethernet bridge;

- Netfilter;

- XFRM subsystem; (CVE-2025-21656, CVE-2026-63940, CVE-2026-74350, CVE-2026-98432, CVE-2026-99999)

Products covered

A separate affected-products list was not included in the collected bulletin.

Remediation

This update corrects flaws in the following subsystems:

  • x86 architecture
  • Hardware monitoring drivers
  • OCFS2 file system
  • IPv4 networking
  • Ethernet bridge
  • Netfilter
  • XFRM subsystem; (CVE-2025-21656, CVE-2026-63940, CVE-2026-74350, CVE-2026-98432, CVE-2026-99999)

CVEs in this advisory 5

Updates

  1. Published by Ubuntu

    The publication date reported by the vendor.

  2. Added to SecurityAlert

    We collected the advisory from the official source.