Ubuntu USN-8498-1 Security Advisory: Linux Kernel Vulnerabilities Fix

Vulnerability Overview Vulnerability ID: USN-8498-1 Publication Date: July 2, 2026 Affected Systems: Linux kernel (NVIDIA Tegra) Description: Multiple security issues were discovered that attackers could exploit to compromise the system. Impact Scope Affected Subsystems: - ARM64 architecture - MIPS architecture - PowerPC architecture - x86 architecture - Block layer subsystem - Cryptographic API - ACPI driver - ATM driver - RNBD block device driver - Ublks userspace block driver - Bus devices - Character device drivers - TPM device drivers - Clock framework and drivers - Clock source drivers - CPU idle management framework - Hardware encryption device drivers - DMA engine subsystem - EFI core - GPIO subsystem - CPU drivers - HID subsystem - HID drivers - Hardware monitoring drivers - IIO subsystem - InfiniBand drivers - IOMMU subsystem - Various devices Remediation Update Notes: - After updating the system standardly, a restart is required to apply all necessary changes. - Due to inevitable ABI changes, the kernel update has been assigned a new version number, requiring all third-party kernel modules to be recompiled and reinstalled. - Standard system upgrades will perform this operation automatically unless the standard kernel meta-packages (e.g., linux-generic, linux-generic-lts-release, linux-virtual, linux-powerpc) are manually uninstalled. Fixed Versions: - Ubuntu 24.04 LTS noble: - – 6.8.0-1029.30 - – 6.8.0-1029.30 - – 6.8.0-1029.30 - – 6.8.0-1029.30 - – 6.8.0-1029.30 - – 6.8.0-1029.30 References CVE Numbers: - CVE-2026-46328 - CVE-2026-46289 - CVE-2026-46270 - CVE-2026-46267 - CVE-2026-46266 - CVE-2026-46265 - CVE-2026-46261 - CVE-2026-46260 - CVE-2026-46259 - CVE-2026-46255 Related Notices USN-8497-1 USN-8493-1 USN-8492-1 USN-8492-2 USN-8491-1 USN-8490-1 USN-8489-1 USN-8488-1 USN-8488-2 Risk Reduction Ubuntu Pro: Provides ten years of security coverage for packages in the main and universe repositories, free for up to five machines. Additional Information Contact Team: For further questions, please contact the team members. Footer Information Copyright: © 2026 Canonical Ltd. Trademarks: Ubuntu and Canonical are registered trademarks of Canonical Ltd. Legal Information: Legal information, data privacy, manage your tracking settings, report bugs on this site.

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Ubuntu USN-8498-1 Security Advisory: Linux Kernel Vulnerabilities Fix