 static void reds_handle_ticket(void *opaque)
 {
     RedLinkInfo *link = (RedLinkInfo *)opaque;
    char *password;
     time_t ltime;
    int password_size;
 
     time(&ltime);
    if (RSA_size(link->tiTicketing.rsa) < SPICE_MAX_PASSWORD_LENGTH) {
        spice_warning("RSA modulus size is smaller than SPICE_MAX_PASSWORD_LENGTH (%d < %d), "
                      "SPICE ticket sent from client may be truncated",
                      RSA_size(link->tiTicketing.rsa), SPICE_MAX_PASSWORD_LENGTH);
    }

    password = g_malloc0(RSA_size(link->tiTicketing.rsa) + 1);
    password_size = RSA_private_decrypt(link->tiTicketing.rsa_size,
                                        link->tiTicketing.encrypted_ticket.encrypted_data,
                                        (unsigned char *)password,
                                        link->tiTicketing.rsa,
                                        RSA_PKCS1_OAEP_PADDING);
    if (password_size == -1) {
        spice_warning("failed to decrypt RSA encrypted password: %s",
                      ERR_error_string(ERR_get_error(), NULL));
        goto error;
    }
    password[password_size] = '\0';
 
     if (ticketing_enabled && !link->skip_auth) {
         int expired =  taTicket.expiration_time < ltime;
 
         if (strlen(taTicket.password) == 0) {
             spice_warning("Ticketing is enabled, but no password is set. "
                          "please set a ticket first");
            goto error;
         }
 
        if (expired || strcmp(password, taTicket.password) != 0) {
             if (expired) {
                 spice_warning("Ticket has expired");
             } else {
                 spice_warning("Invalid password");
             }
            goto error;
         }
     }
 
     reds_handle_link(link);
    goto end;

error:
    reds_send_link_result(link, SPICE_LINK_ERR_PERMISSION_DENIED);
    reds_link_free(link);

end:
    g_free(password);
 }

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.