Nvidia, AMD, and Arm Address Critical Security Vulnerabilities

Major semiconductor manufacturers Nvidia, AMD, and Arm have issued security advisories and patches to address several vulnerabilities affecting GPU drivers and AI-related software.

AMD Discloses GPU Driver Flaw

AMD has announced fixes for CVE-2026-43603, a NULL pointer dereference vulnerability within its Linux GPU kernel driver. The defect, which was identified by researchers Maxime Rossi Bellom and Ramtine Tofighi Shirazi from SecMate, could allow an attacker to trigger system crashes or cause a denial-of-service (DoS) condition.

The vulnerability occurs when an application invokes a specific graphics memory management interface to perform a ‘clear’ operation under certain compute-processing conditions. This causes the driver to fail to validate an internal data reference before use.

AMD has already rolled out fixes for EPYC, Athlon, Ryzen, Radeon, and Instinct processors. Patches for EPYC Embedded and Ryzen Embedded processors are scheduled for release in October.

Arm Addresses Mali GPU Vulnerabilities

Arm has published an advisory covering nine separate vulnerabilities affecting its Mali GPU architecture. These flaws could permit unauthorised access to sensitive kernel information or memory that has already been freed. Exploitation of these defects could also lead to denial-of-service conditions.

Fixes are now available for the Valhall GPU and the Arm 5th Gen GPU Architecture kernel and userspace drivers. The Bifrost GPU kernel and userspace drivers are also among the affected systems.

Nvidia Updates Triton Inference Server

Nvidia has released a software update for its Triton Inference Server for Linux to resolve two high-severity security defects. The first vulnerability could result in a denial-of-service, while the second poses a broader risk, including potential information disclosure, data tampering, and denial-of-service conditions.

The Triton Inference Server is a software platform used to deploy trained AI models in production environments.