CVE-2023-53553 Linux内核HID hyperv驱动结构体memcpy越界漏洞

// PoC for CVE-2023-53553 - Linux Kernel HID hyperv memcpy overrun // This vulnerability is triggered during compilation with gcc-9 when // CONFIG_FORTIFY_SOURCE is enabled, causing a compile-time error. // The vulnerable code is in drivers/hid/hid-hyperv.c, mousevsc_on_receive(): /* static void mousevsc_on_receive(struct hv_device *device, struct vmpacket_descriptor *packet) { // ... struct mousevsc_prt_in_report report; // ... if (WARN_ON(size > sizeof(report))) { // This WARN_ON confuses gcc-9 // ... } memcpy(&report, pkt, size); // Line 272 - triggers fortify warning // ... } */ // To reproduce the compile-time warning: // 1. Use gcc-9 compiler // 2. Enable CONFIG_FORTIFY_SOURCE=y // 3. Compile drivers/hid/hid-hyperv.c // Result: error: call to '__write_overflow_field' declared with attribute warning // Runtime trigger (requires Hyper-V environment): // 1. Run Linux as guest on Hyper-V // 2. Connect a synthetic mouse device // 3. Send specially crafted input report exceeding expected size // This may cause kernel panic or memory corruption #include <linux/module.h> #include <linux/kernel.h> MODULE_LICENSE("GPL"); MODULE_DESCRIPTION("CVE-2023-53553 PoC - HID hyperv memcpy overrun"); static int __init cve_2023_53553_init(void) { pr_info("CVE-2023-53553: HID hyperv driver memcpy overrun vulnerability\n"); pr_info("Affected: Linux kernel with gcc-9 and CONFIG_FORTIFY_SOURCE\n"); pr_info("Fix: Apply kernel patch from stable tree\n"); return 0; } static void __exit cve_2023_53553_exit(void) { pr_info("CVE-2023-53553 module unloaded\n"); } module_init(cve_2023_53553_init); module_exit(cve_2023_53553_exit);