CVE-2024-36320 in Ryzen 4000 Mobile Processors with Radeon Graphics
Summary
by MITRE • 02/11/2026
Integer Overflow within atihdwt6.sys can allow a local attacker to cause out of bound read/write potentially leading to loss of confidentiality, integrity and availability
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Analysis
by VulDB Data Team • 02/11/2026
The vulnerability identified as CVE-2024-36320 resides within the atihdwt6.sys driver component of AMD Radeon graphics drivers, representing a critical integer overflow condition that manifests in kernel-mode execution contexts. This flaw specifically affects systems running Windows operating environments where AMD graphics hardware is present, creating a pathway for local privilege escalation and arbitrary code execution. The vulnerability stems from improper input validation within the driver's memory handling routines, where integer overflow conditions can occur during buffer size calculations or memory allocation processes. When an attacker exploits this condition, the system's memory management mechanisms become compromised, potentially allowing for out-of-bounds memory access patterns that can result in data corruption or unauthorized information disclosure.
The technical implementation of this vulnerability involves the manipulation of integer variables that control buffer boundaries and memory allocation sizes within the atihdwt6.sys driver. During normal operation, the driver processes graphics-related commands and memory management requests that require precise calculations to ensure proper memory allocation and access boundaries. When integer overflow occurs, these calculations produce unexpected values that can bypass normal memory protection mechanisms. The flaw typically manifests when the driver receives specially crafted input parameters that cause arithmetic operations to exceed the maximum representable value for the integer data type, resulting in wraparound behavior that can lead to memory corruption. This condition creates a scenario where an attacker can manipulate memory locations that should normally be protected, potentially allowing for arbitrary read and write operations within kernel memory space.
The operational impact of CVE-2024-36320 extends beyond simple data corruption, as it fundamentally undermines the security boundaries between user-mode applications and kernel-mode driver components. Local attackers who can execute code on the target system gain the ability to perform privilege escalation attacks, potentially elevating their access level from standard user to kernel-level privileges. This escalation capability enables attackers to bypass standard operating system security controls, including memory protection mechanisms and access control lists that normally prevent unauthorized system modifications. The vulnerability's potential for confidentiality breach is particularly concerning as it can allow attackers to read sensitive kernel memory regions containing encryption keys, authentication credentials, or other protected information. Integrity compromise occurs through the ability to modify critical system data structures, potentially leading to system instability or complete system compromise. Availability threats emerge when attackers can cause system crashes or denial of service conditions through memory corruption that affects critical driver functions or system services.
Mitigation strategies for CVE-2024-36320 should prioritize immediate patch deployment from AMD, as this vulnerability affects the core graphics driver functionality that is essential for system operation. Organizations must implement comprehensive monitoring for anomalous driver behavior or unexpected memory access patterns that could indicate exploitation attempts. The vulnerability aligns with CWE-190, Integer Overflow or Wraparound, which specifically addresses integer arithmetic errors that can lead to memory corruption and privilege escalation. Security teams should consider implementing runtime protections such as kernel address space layout randomization and control flow integrity checks to reduce the exploitability of such conditions. Additionally, system administrators should review and restrict user access to graphics driver interfaces where possible, implementing least privilege principles to minimize potential attack surface. The ATT&CK framework categorizes this vulnerability under privilege escalation techniques, specifically targeting the use of kernel-mode exploits to gain elevated system access. Organizations should also consider implementing endpoint detection and response solutions that can identify suspicious driver behavior patterns or memory access anomalies that may indicate exploitation attempts. Regular vulnerability assessments and security audits should be conducted to ensure that all graphics driver components remain up-to-date with the latest security patches and mitigations.