CVE-2026-40659 in Compressonator SDK
Summary
by MITRE • 11/03/2026
An integer overflow condition in the AMD Compressonator SDK could allow an attacker with local access to supply a specially crafted DirectDraw Surface (DDS) file, potentially resulting in denial of service (DoS).
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Analysis
by VulDB Data Team • 11/03/2026
The vulnerability identified within the AMD Compressonator SDK represents a critical flaw rooted in improper integer arithmetic handling during the processing of image data. Specifically, this issue manifests as an integer overflow condition when parsing DirectDraw Surface files, commonly known by their DDS file extension. The AMD Compressonator is widely utilized for texture compression and decompression tasks within game development pipelines and graphics applications. When a user or automated system provides a specially crafted input file to the SDK, the application fails to correctly validate the size of data structures before performing arithmetic operations on them. This lack of bounds checking allows an attacker with local access to trigger an overflow that corrupts memory allocation logic, leading directly to a denial of service condition where the host application crashes or becomes unresponsive.
From a technical perspective, this flaw aligns closely with CWE-190, which classifies integer overflows and wraparounds as significant software weaknesses. In many graphics processing libraries, developers assume that input dimensions such as width, height, and depth will remain within predictable ranges. However, when an attacker supplies malformed DDS files containing extreme or maliciously calculated values for these parameters, the resulting multiplication of these values can exceed the maximum limit of a signed integer variable. Instead of triggering an error handling routine, the application proceeds with this corrupted value to allocate memory buffers. This often results in allocating significantly less memory than required, leading to buffer overflows when data is written into the undersized buffer, or causing immediate crashes due to invalid pointer arithmetic and stack corruption.
The operational impact of this vulnerability is primarily centered on availability rather than confidentiality or integrity, although the potential for further exploitation cannot be entirely dismissed depending on how the SDK integrates with higher-level applications. For local attackers who have access to execute code or inject files into a system running an application that utilizes the AMD Compressonator SDK, the ability to cause a denial of service disrupts workflow and can lead to data loss if unsaved work is involved. In environments where this SDK is used in server-side rendering farms or automated texture processing pipelines, such crashes could halt production processes entirely. While direct remote code execution via this specific integer overflow may require additional exploitation techniques not detailed here, the instability introduced by memory corruption remains a severe risk to system reliability and service continuity.
To mitigate these risks, developers integrating the AMD Compressonator SDK must implement rigorous input validation mechanisms before passing any file data into compression or decompression functions. This includes verifying that all dimensional parameters such as width, height, and mip levels fall within expected bounds defined by industry standards for DDS files. Additionally, employing static analysis tools capable of detecting integer overflow patterns during the software development lifecycle can help identify these vulnerabilities early. Updating to patched versions of the SDK provided by AMD is essential if available, as vendors typically address known arithmetic flaws in subsequent releases. Furthermore, applications should be designed with robust exception handling and resource isolation techniques, such as running texture processing tasks within sandboxed environments or using process limits that prevent a single crash from taking down the entire system.
This vulnerability also maps to specific behaviors observed in adversarial tactics, particularly those involving local privilege escalation or service disruption through application instability. While it does not directly map to command execution without further exploitation steps, its classification under CWE-190 highlights the importance of secure coding practices regarding arithmetic operations on untrusted input. Security teams should prioritize reviewing any custom implementations that wrap around this SDK to ensure that defensive programming techniques are applied consistently across all data ingestion points. Regular security audits focusing on image parsing libraries remain critical for maintaining the integrity and availability of graphics-intensive software ecosystems.