static int tcmu_glfs_flush(struct tcmu_device *dev,
                           struct tcmulib_cmd *cmd)
{
	struct glfs_state *state = tcmu_get_dev_private(dev);
	glfs_cbk_cookie *cookie;

	cookie = calloc(1, sizeof(*cookie));
	if (!cookie) {
		tcmu_err("Could not allocate cookie: %m\n");
		goto out;
	}
	cookie->dev = dev;
	cookie->cmd = cmd;
	cookie->length = 0;
	cookie->op = TCMU_GLFS_FLUSH;

	if (glfs_fdatasync_async(state->gfd, glfs_async_cbk, cookie) < 0) {
		tcmu_err("glfs_fdatasync_async failed: %m\n");
		goto out;
	}

	return 0;

out:
	free(cookie);
	return SAM_STAT_TASK_SET_FULL;
}

The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.