CVE-2025-11277: 
Linux Debian vulnerability analysis and mitigation

A critical vulnerability has been identified in Open Asset Import Library Assimp 6.0.2, tracked as CVE-2025-11277. The vulnerability affects the Q3DImporter::InternReadFile function in the file assimp/code/AssetLib/Q3D/Q3DLoader.cpp. The issue was discovered and disclosed on September 19, 2025, and involves a heap-based buffer overflow condition that could lead to memory corruption (VulDB, GitHub Issue).

The vulnerability stems from improper handling of texture data allocation in the Q3DImporter::InternReadFile function. When processing extremely large texture dimensions (mWidth and mHeight), their multiplication can cause an integer overflow in the unsigned int range, resulting in mul wrapping around to a small number (observed as 0). The subsequent pointer arithmetic creates an invalid memory reference, leading to out-of-bounds writes. The vulnerability has been assigned CVSS v3.1 base score of 5.3 (MEDIUM) with vector AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L (VulDB).

The successful exploitation of this vulnerability could lead to memory corruption, potentially affecting the confidentiality, integrity, and availability of the system. The heap-based buffer overflow could allow an attacker to execute arbitrary code or cause denial of service conditions (VulDB).

Currently, there are no official patches or mitigations available for this vulnerability. It is recommended to consider using alternative products until a fix is released. A potential fix would involve implementing proper bounds checking and using 64-bit arithmetic before multiplication to prevent the integer overflow condition (VulDB).