CVE-2026-43041 Linux内核内存泄漏漏洞

/* * PoC Concept for CVE-2026-43041 * This code demonstrates the vulnerable logic flow. * Actual exploitation requires kernel-level interaction. */ #include <linux/radix-tree.h> void simulate_vulnerability() { RADIX_TREE(tree, GFP_KERNEL); // Simulate allocation failure during node creation // In the real bug, qrtr_tx_flow does this implicitly void *item = kmalloc(sizeof(int), GFP_KERNEL); if (!item) { // Allocation fails, but intermediate nodes might leak // depending on the flow in __radix_tree_create return; } radix_tree_insert(&tree, 0, item); // Cleanup logic in vulnerable code was incomplete for intermediate nodes }