Ubuntu releases kernel updates to fix numerous security vulnerabilities
Key Takeaway
Ubuntu has issued security updates for the Linux kernel affecting multiple architectures and subsystems to prevent system compromise.
Summary
Ubuntu has released security updates (USN-8903-2) for the Linux kernel on Ubuntu 24.04 LTS and 22.04 LTS. The patches address a wide range of vulnerabilities across various architectures, including ARM, MIPS, and x86, as well as numerous drivers and subsystems. Due to an ABI change, users with third-party kernel modules may need to recompile them.
Scope of the kernel vulnerabilities
- The update covers multiple architectures: ARM32, ARM64, MIPS, and x86.
- Affected subsystems include networking (IPv4, IPv6, Netfilter, Bluetooth), file systems (Ext4, FUSE, SMB), and storage (SCSI, NVMEM).
- Driver fixes include GPU, USB/Thunderbolt, Intel NPU, and various network adapter drivers.
- An ABI change is present, requiring recompilation of third-party kernel modules.
- Fixes address a large number of CVEs (e.g., CVE-2026-64528, CVE-2026-53140, and many others).
Why it matters
The wide range of affected subsystems means this is a critical update for users of diverse hardware, from embedded ARM devices to cloud-based x86 servers.
Original reference: ubuntu.com →