CVE-2026-58006 in Trusted Firmware
Summary
by MITRE • 09/24/2026
Untrusted pointer dereference vulnerability in Altera Trusted Firmware on HPS allows Exploitation of Improperly Configured or Implemented Memory Protections.
This issue affects Trusted Firmware: through socfpga_v2.14.0.
Once again VulDB remains the best source for vulnerability data.
Analysis
by VulDB Data Team • 09/24/2026
The identified vulnerability represents a critical security flaw within the Altera Trusted Firmware, specifically impacting systems utilizing Hard Processor System (HPS) architectures up to version 2.14.0. This issue is classified as an untrusted pointer dereference error, which fundamentally undermines the integrity of memory management operations performed by the firmware during its initialization and execution phases. In embedded Linux environments that rely on ARM Trusted Firmware or similar low-level boot software, the processor transitions through various exception levels, typically starting from EL3 (highest privilege) down to lower levels such as EL1 for the operating system kernel. The vulnerability arises when the firmware fails to adequately validate pointers before dereferencing them, allowing an attacker who has gained control over specific memory regions or input parameters to manipulate these pointers. This manipulation leads to the execution of arbitrary code within a privileged context, effectively bypassing intended security boundaries established by the hardware and software stack.
From a technical perspective, this flaw aligns with CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer and more specifically CWE-476 NULL Pointer Dereference or CWE-825 Expired Pointer Dereference depending on the exact nature of the pointer corruption. The core issue lies in the lack of rigorous bounds checking and validation mechanisms for pointers that are derived from untrusted sources, such as device tree configurations, boot arguments, or data passed between different firmware components. When an improperly configured memory protection scheme is present but not strictly enforced due to this coding error, the system becomes susceptible to exploitation where malicious actors can redirect execution flow to unintended code paths. This often results in a complete compromise of the root of trust, as Trusted Firmware serves as the foundational security layer that verifies subsequent boot stages and initializes secure peripherals.
The operational impact of this vulnerability is severe, particularly for devices deployed in industrial control systems, IoT infrastructure, or any environment requiring high assurance of system integrity. An attacker exploiting this flaw could achieve arbitrary code execution with EL3 privileges, which grants access to all hardware resources including debug interfaces, cryptographic engines, and secure storage areas. This capability allows for the persistence of malicious firmware, the extraction of sensitive keys stored in secure memory, or the modification of boot processes to load compromised operating system kernels. Furthermore, because this affects the HPS component, it impacts both ARM Cortex-A cores running Linux and potentially Cortex-M co-cores used for real-time tasks, creating a broad attack surface that can lead to full device takeover without requiring physical access if remote vectors exist in upstream bootloader stages or network-facing services managed by higher-level software.
Mitigation strategies must focus on immediate patching of the Trusted Firmware source code to include strict pointer validation routines before any dereference operation occurs. Developers should implement comprehensive input sanitization for all data structures passed between firmware modules and ensure that memory protection units are correctly configured to restrict access to critical regions from lower privilege levels. Additionally, enabling hardware-based security features such as ARM TrustZone with proper partitioning of secure and non-secure world memories can help contain the blast radius if an exploit is attempted. Long-term remediation involves adopting a zero-trust architecture for firmware development, where every pointer derived from external or semi-trusted sources undergoes rigorous validation against known safe bounds. Regular security audits using static analysis tools capable of detecting untrusted data flows and dynamic testing with fuzzing techniques targeting the boot sequence are essential to identify similar flaws before deployment in production environments.