void fuse_abort_conn(struct fuse_conn *fc, bool is_abort)
{
	struct fuse_iqueue *fiq = &fc->iq;

	spin_lock(&fc->lock);
	if (fc->connected) {
		struct fuse_dev *fud;
		struct fuse_req *req, *next;
		LIST_HEAD(to_end);
		unsigned int i;

		/* Background queuing checks fc->connected under bg_lock */
		spin_lock(&fc->bg_lock);
		fc->connected = 0;
		spin_unlock(&fc->bg_lock);

		fc->aborted = is_abort;
		fuse_set_initialized(fc);
		list_for_each_entry(fud, &fc->devices, entry) {
			struct fuse_pqueue *fpq = &fud->pq;

			spin_lock(&fpq->lock);
			fpq->connected = 0;
			list_for_each_entry_safe(req, next, &fpq->io, list) {
				req->out.h.error = -ECONNABORTED;
				spin_lock(&req->waitq.lock);
				set_bit(FR_ABORTED, &req->flags);
				if (!test_bit(FR_LOCKED, &req->flags)) {
					set_bit(FR_PRIVATE, &req->flags);
					__fuse_get_request(req);
					list_move(&req->list, &to_end);
				}
				spin_unlock(&req->waitq.lock);
			}
			for (i = 0; i < FUSE_PQ_HASH_SIZE; i++)
				list_splice_tail_init(&fpq->processing[i],
						      &to_end);
			spin_unlock(&fpq->lock);
		}
		spin_lock(&fc->bg_lock);
		fc->blocked = 0;
		fc->max_background = UINT_MAX;
		flush_bg_queue(fc);
		spin_unlock(&fc->bg_lock);

		spin_lock(&fiq->waitq.lock);
		fiq->connected = 0;
		list_for_each_entry(req, &fiq->pending, list)
			clear_bit(FR_PENDING, &req->flags);
		list_splice_tail_init(&fiq->pending, &to_end);
		while (forget_pending(fiq))
			kfree(dequeue_forget(fiq, 1, NULL));
		wake_up_all_locked(&fiq->waitq);
		spin_unlock(&fiq->waitq.lock);
		kill_fasync(&fiq->fasync, SIGIO, POLL_IN);
		end_polls(fc);
		wake_up_all(&fc->blocked_waitq);
		spin_unlock(&fc->lock);

		end_requests(fc, &to_end);
	} else {
		spin_unlock(&fc->lock);
	}
}

The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory belongs to the code that operates on the new pointer.